/**
* Initialization of the context's Color attribute group.
*
* \param ctx GL context.
*
* Initializes the related fields in the context color attribute group,
* __struct gl_contextRec::Color.
*/
void _mesa_init_color( struct gl_context * ctx )
{
GLuint i;
/* Color buffer group */
ctx->Color.IndexMask = ~0u;
memset(ctx->Color.ColorMask, 0xff, sizeof(ctx->Color.ColorMask));
ctx->Color.ClearIndex = 0;
ASSIGN_4V( ctx->Color.ClearColor.f, 0, 0, 0, 0 );
ctx->Color.AlphaEnabled = GL_FALSE;
ctx->Color.AlphaFunc = GL_ALWAYS;
ctx->Color.AlphaRef = 0;
ctx->Color.BlendEnabled = 0x0;
for (i = 0; i < ARRAY_SIZE(ctx->Color.Blend); i++) {
ctx->Color.Blend[i].SrcRGB = GL_ONE;
ctx->Color.Blend[i].DstRGB = GL_ZERO;
ctx->Color.Blend[i].SrcA = GL_ONE;
ctx->Color.Blend[i].DstA = GL_ZERO;
ctx->Color.Blend[i].EquationRGB = GL_FUNC_ADD;
ctx->Color.Blend[i].EquationA = GL_FUNC_ADD;
}
ASSIGN_4V( ctx->Color.BlendColor, 0.0, 0.0, 0.0, 0.0 );
ASSIGN_4V( ctx->Color.BlendColorUnclamped, 0.0, 0.0, 0.0, 0.0 );
ctx->Color.IndexLogicOpEnabled = GL_FALSE;
ctx->Color.ColorLogicOpEnabled = GL_FALSE;
ctx->Color.LogicOp = GL_COPY;
ctx->Color.DitherFlag = GL_TRUE;
/* GL_FRONT is not possible on GLES. Instead GL_BACK will render to either
* the front or the back buffer depending on the config */
if (ctx->Visual.doubleBufferMode || _mesa_is_gles(ctx)) {
ctx->Color.DrawBuffer[0] = GL_BACK;
}
else {
ctx->Color.DrawBuffer[0] = GL_FRONT;
}
ctx->Color.ClampFragmentColor = ctx->API == API_OPENGL_COMPAT ?
GL_FIXED_ONLY_ARB : GL_FALSE;
ctx->Color._ClampFragmentColor = GL_FALSE;
ctx->Color.ClampReadColor = GL_FIXED_ONLY_ARB;
/* GLES 1/2/3 behaves as though GL_FRAMEBUFFER_SRGB is always enabled
* if EGL_KHR_gl_colorspace has been used to request sRGB.
*/
ctx->Color.sRGBEnabled = _mesa_is_gles(ctx);
ctx->Color.BlendCoherent = true;
}
void GLAPIENTRY
_mesa_BindImageTexture(GLuint unit, GLuint texture, GLint level,
GLboolean layered, GLint layer, GLenum access,
GLenum format)
{
GET_CURRENT_CONTEXT(ctx);
struct gl_image_unit *u;
if (!validate_bind_image_texture(ctx, unit, texture, level,
layered, layer, access, format))
return;
u = &ctx->ImageUnits[unit];
FLUSH_VERTICES(ctx, 0);
ctx->NewDriverState |= ctx->DriverFlags.NewImageUnits;
if (texture) {
struct gl_texture_object *t = _mesa_lookup_texture(ctx, texture);
if (!t) {
_mesa_error(ctx, GL_INVALID_VALUE, "glBindImageTexture(texture)");
return;
}
/* From section 8.22 "Texture Image Loads and Stores" of the OpenGL ES
* 3.1 spec:
*
* "An INVALID_OPERATION error is generated if texture is not the name
* of an immutable texture object."
*/
if (_mesa_is_gles(ctx) && !t->Immutable) {
_mesa_error(ctx, GL_INVALID_OPERATION,
"glBindImageTexture(!immutable)");
return;
}
_mesa_reference_texobj(&u->TexObj, t);
} else {
_mesa_reference_texobj(&u->TexObj, NULL);
}
u->Level = level;
u->Access = access;
u->Format = format;
u->_ActualFormat = _mesa_get_shader_image_format(format);
if (u->TexObj && _mesa_tex_target_is_layered(u->TexObj->Target)) {
u->Layered = layered;
u->Layer = layer;
u->_Layer = (u->Layered ? 0 : u->Layer);
} else {
u->Layered = GL_FALSE;
u->Layer = 0;
}
if (ctx->Driver.BindImageTexture)
ctx->Driver.BindImageTexture(ctx, u, u->TexObj, level, layered,
layer, access, format);
}
/**
* Attach shader to a shader program.
*/
static void
attach_shader(struct gl_context *ctx, GLuint program, GLuint shader)
{
struct gl_shader_program *shProg;
struct gl_shader *sh;
GLuint i, n;
const bool same_type_disallowed = _mesa_is_gles(ctx);
shProg = _mesa_lookup_shader_program_err(ctx, program, "glAttachShader");
if (!shProg)
return;
sh = _mesa_lookup_shader_err(ctx, shader, "glAttachShader");
if (!sh) {
return;
}
n = shProg->NumShaders;
for (i = 0; i < n; i++) {
if (shProg->Shaders[i] == sh) {
/* The shader is already attched to this program. The
* GL_ARB_shader_objects spec says:
*
* "The error INVALID_OPERATION is generated by AttachObjectARB
* if <obj> is already attached to <containerObj>."
*/
_mesa_error(ctx, GL_INVALID_OPERATION, "glAttachShader");
return;
} else if (same_type_disallowed &&
shProg->Shaders[i]->Type == sh->Type) {
/* Shader with the same type is already attached to this program,
* OpenGL ES 2.0 and 3.0 specs say:
*
* "Multiple shader objects of the same type may not be attached
* to a single program object. [...] The error INVALID_OPERATION
* is generated if [...] another shader object of the same type
* as shader is already attached to program."
*/
_mesa_error(ctx, GL_INVALID_OPERATION, "glAttachShader");
return;
}
}
/* grow list */
shProg->Shaders = (struct gl_shader **)
_mesa_realloc(shProg->Shaders,
n * sizeof(struct gl_shader *),
(n + 1) * sizeof(struct gl_shader *));
if (!shProg->Shaders) {
_mesa_error(ctx, GL_OUT_OF_MEMORY, "glAttachShader");
return;
}
/* append */
shProg->Shaders[n] = NULL; /* since realloc() didn't zero the new space */
_mesa_reference_shader(ctx, &shProg->Shaders[n], sh);
shProg->NumShaders++;
}
static size_t
brw_query_samples_for_format(struct gl_context *ctx, GLenum target,
GLenum internalFormat, int samples[16])
{
struct brw_context *brw = brw_context(ctx);
const struct gen_device_info *devinfo = &brw->screen->devinfo;
(void) target;
(void) internalFormat;
switch (devinfo->gen) {
case 11:
case 10:
case 9:
samples[0] = 16;
samples[1] = 8;
samples[2] = 4;
samples[3] = 2;
return 4;
case 8:
samples[0] = 8;
samples[1] = 4;
samples[2] = 2;
return 3;
case 7:
if (internalFormat == GL_RGBA32F && _mesa_is_gles(ctx)) {
/* For GLES, we are allowed to return a smaller number of samples for
* GL_RGBA32F. See OpenGLES 3.2 spec, section 20.3.1 Internal Format
* Query Parameters, under SAMPLES:
*
* "A value less than or equal to the value of MAX_SAMPLES, if
* internalformat is RGBA16F, R32F, RG32F, or RGBA32F."
*
* In brw_render_target_supported, we prevent formats with a size
* greater than 8 bytes from using 8x MSAA on gen7.
*/
samples[0] = 4;
return 1;
} else {
samples[0] = 8;
samples[1] = 4;
return 2;
}
case 6:
samples[0] = 4;
return 1;
default:
assert(devinfo->gen < 6);
samples[0] = 1;
return 1;
}
}
/**
* Convert a GL texture target enum such as GL_TEXTURE_2D or GL_TEXTURE_3D
* into the corresponding Mesa texture target index.
* Note that proxy targets are not valid here.
* \return TEXTURE_x_INDEX or -1 if target is invalid
*/
static GLint
target_enum_to_index(struct gl_context *ctx, GLenum target)
{
switch (target) {
case GL_TEXTURE_1D:
return _mesa_is_desktop_gl(ctx) ? TEXTURE_1D_INDEX : -1;
case GL_TEXTURE_2D:
return TEXTURE_2D_INDEX;
case GL_TEXTURE_3D:
return TEXTURE_3D_INDEX;
case GL_TEXTURE_CUBE_MAP_ARB:
return ctx->Extensions.ARB_texture_cube_map
? TEXTURE_CUBE_INDEX : -1;
case GL_TEXTURE_RECTANGLE_NV:
return _mesa_is_desktop_gl(ctx) && ctx->Extensions.NV_texture_rectangle
? TEXTURE_RECT_INDEX : -1;
case GL_TEXTURE_1D_ARRAY_EXT:
return _mesa_is_desktop_gl(ctx)
&& (ctx->Extensions.EXT_texture_array
|| ctx->Extensions.MESA_texture_array)
? TEXTURE_1D_ARRAY_INDEX : -1;
case GL_TEXTURE_2D_ARRAY_EXT:
return (_mesa_is_desktop_gl(ctx)
&& (ctx->Extensions.EXT_texture_array
|| ctx->Extensions.MESA_texture_array))
|| _mesa_is_gles3(ctx)
? TEXTURE_2D_ARRAY_INDEX : -1;
case GL_TEXTURE_BUFFER_ARB:
return ctx->API == API_OPENGL_CORE &&
ctx->Extensions.ARB_texture_buffer_object ?
TEXTURE_BUFFER_INDEX : -1;
case GL_TEXTURE_EXTERNAL_OES:
return _mesa_is_gles(ctx) && ctx->Extensions.OES_EGL_image_external
? TEXTURE_EXTERNAL_INDEX : -1;
case GL_TEXTURE_CUBE_MAP_ARRAY:
return TEXTURE_CUBE_ARRAY_INDEX;
case GL_TEXTURE_2D_MULTISAMPLE:
return _mesa_is_desktop_gl(ctx) && ctx->Extensions.ARB_texture_multisample
? TEXTURE_2D_MULTISAMPLE_INDEX: -1;
case GL_TEXTURE_2D_MULTISAMPLE_ARRAY:
return _mesa_is_desktop_gl(ctx) && ctx->Extensions.ARB_texture_multisample
? TEXTURE_2D_MULTISAMPLE_ARRAY_INDEX: -1;
default:
return -1;
}
}
/**
* Generate all the mipmap levels below the base level.
* Note: this GL function would be more useful if one could specify a
* cube face, a set of array slices, etc.
*/
void GLAPIENTRY
_mesa_GenerateMipmap(GLenum target)
{
struct gl_texture_image *srcImage;
struct gl_texture_object *texObj;
GLboolean error;
GET_CURRENT_CONTEXT(ctx);
FLUSH_VERTICES(ctx, 0);
switch (target) {
case GL_TEXTURE_1D:
error = _mesa_is_gles(ctx);
break;
case GL_TEXTURE_2D:
error = GL_FALSE;
break;
case GL_TEXTURE_3D:
error = ctx->API == API_OPENGLES;
break;
case GL_TEXTURE_CUBE_MAP:
error = !ctx->Extensions.ARB_texture_cube_map;
break;
case GL_TEXTURE_1D_ARRAY:
error = _mesa_is_gles(ctx) || !ctx->Extensions.EXT_texture_array;
break;
case GL_TEXTURE_2D_ARRAY:
error = (_mesa_is_gles(ctx) && ctx->Version < 30)
|| !ctx->Extensions.EXT_texture_array;
break;
case GL_TEXTURE_CUBE_MAP_ARRAY:
error = _mesa_is_gles(ctx) ||
!ctx->Extensions.ARB_texture_cube_map_array;
break;
default:
error = GL_TRUE;
}
if (error) {
_mesa_error(ctx, GL_INVALID_ENUM, "glGenerateMipmapEXT(target=%s)",
_mesa_lookup_enum_by_nr(target));
return;
}
texObj = _mesa_get_current_tex_object(ctx, target);
if (texObj->BaseLevel >= texObj->MaxLevel) {
/* nothing to do */
return;
}
if (texObj->Target == GL_TEXTURE_CUBE_MAP &&
!_mesa_cube_complete(texObj)) {
_mesa_error(ctx, GL_INVALID_OPERATION,
"glGenerateMipmap(incomplete cube map)");
return;
}
_mesa_lock_texture(ctx, texObj);
srcImage = _mesa_select_tex_image(ctx, texObj, target, texObj->BaseLevel);
if (!srcImage) {
_mesa_unlock_texture(ctx, texObj);
_mesa_error(ctx, GL_INVALID_OPERATION,
"glGenerateMipmap(zero size base image)");
return;
}
if (_mesa_is_enum_format_integer(srcImage->InternalFormat) ||
_mesa_is_depthstencil_format(srcImage->InternalFormat) ||
_mesa_is_stencil_format(srcImage->InternalFormat)) {
_mesa_unlock_texture(ctx, texObj);
_mesa_error(ctx, GL_INVALID_OPERATION,
"glGenerateMipmap(invalid internal format)");
return;
}
if (target == GL_TEXTURE_CUBE_MAP) {
GLuint face;
for (face = 0; face < 6; face++)
ctx->Driver.GenerateMipmap(ctx,
GL_TEXTURE_CUBE_MAP_POSITIVE_X_ARB + face,
texObj);
}
else {
ctx->Driver.GenerateMipmap(ctx, target, texObj);
}
_mesa_unlock_texture(ctx, texObj);
}
/**
* Helper routine used by glDrawBuffer and glDrawBuffersARB.
* Given a GLenum naming one or more color buffers (such as
* GL_FRONT_AND_BACK), return the corresponding bitmask of BUFFER_BIT_* flags.
*/
static GLbitfield
draw_buffer_enum_to_bitmask(const struct gl_context *ctx, GLenum buffer)
{
switch (buffer) {
case GL_NONE:
return 0;
case GL_FRONT:
return BUFFER_BIT_FRONT_LEFT | BUFFER_BIT_FRONT_RIGHT;
case GL_BACK:
if (_mesa_is_gles(ctx)) {
/* Page 181 (page 192 of the PDF) in section 4.2.1 of the OpenGL
* ES 3.0.1 specification says:
*
* "When draw buffer zero is BACK, color values are written
* into the sole buffer for single-buffered contexts, or into
* the back buffer for double-buffered contexts."
*
* Since there is no stereo rendering in ES 3.0, only return the
* LEFT bits. This also satisfies the "n must be 1" requirement.
*
* We also do this for GLES 1 and 2 because those APIs have no
* concept of selecting the front and back buffer anyway and it's
* convenient to be able to maintain the magic behaviour of
* GL_BACK in that case.
*/
if (ctx->DrawBuffer->Visual.doubleBufferMode)
return BUFFER_BIT_BACK_LEFT;
return BUFFER_BIT_FRONT_LEFT;
}
return BUFFER_BIT_BACK_LEFT | BUFFER_BIT_BACK_RIGHT;
case GL_RIGHT:
return BUFFER_BIT_FRONT_RIGHT | BUFFER_BIT_BACK_RIGHT;
case GL_FRONT_RIGHT:
return BUFFER_BIT_FRONT_RIGHT;
case GL_BACK_RIGHT:
return BUFFER_BIT_BACK_RIGHT;
case GL_BACK_LEFT:
return BUFFER_BIT_BACK_LEFT;
case GL_FRONT_AND_BACK:
return BUFFER_BIT_FRONT_LEFT | BUFFER_BIT_BACK_LEFT
| BUFFER_BIT_FRONT_RIGHT | BUFFER_BIT_BACK_RIGHT;
case GL_LEFT:
return BUFFER_BIT_FRONT_LEFT | BUFFER_BIT_BACK_LEFT;
case GL_FRONT_LEFT:
return BUFFER_BIT_FRONT_LEFT;
case GL_AUX0:
return BUFFER_BIT_AUX0;
case GL_AUX1:
case GL_AUX2:
case GL_AUX3:
return 1 << BUFFER_COUNT; /* invalid, but not BAD_MASK */
case GL_COLOR_ATTACHMENT0_EXT:
return BUFFER_BIT_COLOR0;
case GL_COLOR_ATTACHMENT1_EXT:
return BUFFER_BIT_COLOR1;
case GL_COLOR_ATTACHMENT2_EXT:
return BUFFER_BIT_COLOR2;
case GL_COLOR_ATTACHMENT3_EXT:
return BUFFER_BIT_COLOR3;
case GL_COLOR_ATTACHMENT4_EXT:
return BUFFER_BIT_COLOR4;
case GL_COLOR_ATTACHMENT5_EXT:
return BUFFER_BIT_COLOR5;
case GL_COLOR_ATTACHMENT6_EXT:
return BUFFER_BIT_COLOR6;
case GL_COLOR_ATTACHMENT7_EXT:
return BUFFER_BIT_COLOR7;
default:
/* error */
return BAD_MASK;
}
}
void GLAPIENTRY
_mesa_ReadnPixelsARB( GLint x, GLint y, GLsizei width, GLsizei height,
GLenum format, GLenum type, GLsizei bufSize,
GLvoid *pixels )
{
GLenum err = GL_NO_ERROR;
struct gl_renderbuffer *rb;
GET_CURRENT_CONTEXT(ctx);
FLUSH_VERTICES(ctx, 0);
FLUSH_CURRENT(ctx, 0);
if (MESA_VERBOSE & VERBOSE_API)
_mesa_debug(ctx, "glReadPixels(%d, %d, %s, %s, %p)\n",
width, height,
_mesa_lookup_enum_by_nr(format),
_mesa_lookup_enum_by_nr(type),
pixels);
if (width < 0 || height < 0) {
_mesa_error( ctx, GL_INVALID_VALUE,
"glReadPixels(width=%d height=%d)", width, height );
return;
}
if (ctx->NewState)
_mesa_update_state(ctx);
if (ctx->ReadBuffer->_Status != GL_FRAMEBUFFER_COMPLETE_EXT) {
_mesa_error(ctx, GL_INVALID_FRAMEBUFFER_OPERATION_EXT,
"glReadPixels(incomplete framebuffer)" );
return;
}
rb = _mesa_get_read_renderbuffer_for_format(ctx, format);
if (rb == NULL) {
_mesa_error(ctx, GL_INVALID_OPERATION,
"glReadPixels(read buffer)");
return;
}
/* OpenGL ES 1.x and OpenGL ES 2.0 impose additional restrictions on the
* combinations of format and type that can be used.
*
* Technically, only two combinations are actually allowed:
* GL_RGBA/GL_UNSIGNED_BYTE, and some implementation-specific internal
* preferred combination. This code doesn't know what that preferred
* combination is, and Mesa can handle anything valid. Just work instead.
*/
if (_mesa_is_gles(ctx)) {
if (ctx->API == API_OPENGLES2 &&
_mesa_is_color_format(format) &&
_mesa_get_color_read_format(ctx) == format &&
_mesa_get_color_read_type(ctx) == type) {
err = GL_NO_ERROR;
} else if (ctx->Version < 30) {
err = _mesa_es_error_check_format_and_type(format, type, 2);
if (err == GL_NO_ERROR) {
if (type == GL_FLOAT || type == GL_HALF_FLOAT_OES) {
err = GL_INVALID_OPERATION;
}
}
} else {
err = read_pixels_es3_error_check(format, type, rb);
}
if (err == GL_NO_ERROR && (format == GL_DEPTH_COMPONENT
|| format == GL_DEPTH_STENCIL)) {
err = GL_INVALID_ENUM;
}
if (err != GL_NO_ERROR) {
_mesa_error(ctx, err, "glReadPixels(invalid format %s and/or type %s)",
_mesa_lookup_enum_by_nr(format),
_mesa_lookup_enum_by_nr(type));
return;
}
}
err = _mesa_error_check_format_and_type(ctx, format, type);
if (err != GL_NO_ERROR) {
_mesa_error(ctx, err, "glReadPixels(invalid format %s and/or type %s)",
_mesa_lookup_enum_by_nr(format),
_mesa_lookup_enum_by_nr(type));
return;
}
if (_mesa_is_user_fbo(ctx->ReadBuffer) &&
ctx->ReadBuffer->Visual.samples > 0) {
_mesa_error(ctx, GL_INVALID_OPERATION, "glReadPixels(multisample FBO)");
return;
}
if (!_mesa_source_buffer_exists(ctx, format)) {
_mesa_error(ctx, GL_INVALID_OPERATION, "glReadPixels(no readbuffer)");
return;
}
/* Check that the destination format and source buffer are both
* integer-valued or both non-integer-valued.
*/
if (ctx->Extensions.EXT_texture_integer && _mesa_is_color_format(format)) {
const struct gl_renderbuffer *rb = ctx->ReadBuffer->_ColorReadBuffer;
const GLboolean srcInteger = _mesa_is_format_integer_color(rb->Format);
const GLboolean dstInteger = _mesa_is_enum_format_integer(format);
if (dstInteger != srcInteger) {
_mesa_error(ctx, GL_INVALID_OPERATION,
"glReadPixels(integer / non-integer format mismatch");
return;
}
}
if (width == 0 || height == 0)
return; /* nothing to do */
if (!_mesa_validate_pbo_access(2, &ctx->Pack, width, height, 1,
format, type, bufSize, pixels)) {
if (_mesa_is_bufferobj(ctx->Pack.BufferObj)) {
_mesa_error(ctx, GL_INVALID_OPERATION,
"glReadPixels(out of bounds PBO access)");
} else {
_mesa_error(ctx, GL_INVALID_OPERATION,
"glReadnPixelsARB(out of bounds access:"
" bufSize (%d) is too small)", bufSize);
}
return;
}
if (_mesa_is_bufferobj(ctx->Pack.BufferObj) &&
_mesa_check_disallowed_mapping(ctx->Pack.BufferObj)) {
/* buffer is mapped - that's an error */
_mesa_error(ctx, GL_INVALID_OPERATION, "glReadPixels(PBO is mapped)");
return;
}
ctx->Driver.ReadPixels(ctx, x, y, width, height,
format, type, &ctx->Pack, pixels);
}
/**
* Clear buffers.
*
* \param mask bit-mask indicating the buffers to be cleared.
*
* Flushes the vertices and verifies the parameter. If __struct gl_contextRec::NewState
* is set then calls _mesa_update_state() to update gl_frame_buffer::_Xmin,
* etc. If the rasterization mode is set to GL_RENDER then requests the driver
* to clear the buffers, via the dd_function_table::Clear callback.
*/
void GLAPIENTRY
_mesa_Clear( GLbitfield mask )
{
GET_CURRENT_CONTEXT(ctx);
FLUSH_VERTICES(ctx, 0);
FLUSH_CURRENT(ctx, 0);
if (MESA_VERBOSE & VERBOSE_API)
_mesa_debug(ctx, "glClear 0x%x\n", mask);
if (mask & ~(GL_COLOR_BUFFER_BIT |
GL_DEPTH_BUFFER_BIT |
GL_STENCIL_BUFFER_BIT |
GL_ACCUM_BUFFER_BIT)) {
/* invalid bit set */
_mesa_error( ctx, GL_INVALID_VALUE, "glClear(0x%x)", mask);
return;
}
/* Accumulation buffers were removed in core contexts, and they never
* existed in OpenGL ES.
*/
if ((mask & GL_ACCUM_BUFFER_BIT) != 0
&& (ctx->API == API_OPENGL_CORE || _mesa_is_gles(ctx))) {
_mesa_error( ctx, GL_INVALID_VALUE, "glClear(GL_ACCUM_BUFFER_BIT)");
return;
}
if (ctx->NewState) {
_mesa_update_state( ctx ); /* update _Xmin, etc */
}
if (ctx->DrawBuffer->_Status != GL_FRAMEBUFFER_COMPLETE_EXT) {
_mesa_error(ctx, GL_INVALID_FRAMEBUFFER_OPERATION_EXT,
"glClear(incomplete framebuffer)");
return;
}
if (ctx->DrawBuffer->Width == 0 || ctx->DrawBuffer->Height == 0 ||
ctx->DrawBuffer->_Xmin >= ctx->DrawBuffer->_Xmax ||
ctx->DrawBuffer->_Ymin >= ctx->DrawBuffer->_Ymax)
return;
if (ctx->RasterDiscard)
return;
if (ctx->RenderMode == GL_RENDER) {
GLbitfield bufferMask;
/* don't clear depth buffer if depth writing disabled */
if (!ctx->Depth.Mask)
mask &= ~GL_DEPTH_BUFFER_BIT;
/* Build the bitmask to send to device driver's Clear function.
* Note that the GL_COLOR_BUFFER_BIT flag will expand to 0, 1, 2 or 4
* of the BUFFER_BIT_FRONT/BACK_LEFT/RIGHT flags, or one of the
* BUFFER_BIT_COLORn flags.
*/
bufferMask = 0;
if (mask & GL_COLOR_BUFFER_BIT) {
GLuint i;
for (i = 0; i < ctx->DrawBuffer->_NumColorDrawBuffers; i++) {
GLint buf = ctx->DrawBuffer->_ColorDrawBufferIndexes[i];
if (buf >= 0) {
bufferMask |= 1 << buf;
}
}
}
if ((mask & GL_DEPTH_BUFFER_BIT)
&& ctx->DrawBuffer->Visual.haveDepthBuffer) {
bufferMask |= BUFFER_BIT_DEPTH;
}
if ((mask & GL_STENCIL_BUFFER_BIT)
&& ctx->DrawBuffer->Visual.haveStencilBuffer) {
bufferMask |= BUFFER_BIT_STENCIL;
}
if ((mask & GL_ACCUM_BUFFER_BIT)
&& ctx->DrawBuffer->Visual.haveAccumBuffer) {
bufferMask |= BUFFER_BIT_ACCUM;
}
ASSERT(ctx->Driver.Clear);
ctx->Driver.Clear(ctx, bufferMask);
}
}
/**
* Do error checking and update state for glVertex/Color/TexCoord/...Pointer
* functions.
*
* \param func name of calling function used for error reporting
* \param attrib the attribute array index to update
* \param legalTypes bitmask of *_BIT above indicating legal datatypes
* \param sizeMin min allowable size value
* \param sizeMax max allowable size value (may also be BGRA_OR_4)
* \param size components per element (1, 2, 3 or 4)
* \param type datatype of each component (GL_FLOAT, GL_INT, etc)
* \param stride stride between elements, in elements
* \param normalized are integer types converted to floats in [-1, 1]?
* \param integer integer-valued values (will not be normalized to [-1,1])
* \param ptr the address (or offset inside VBO) of the array data
*/
static void
update_array(struct gl_context *ctx,
const char *func,
GLuint attrib, GLbitfield legalTypesMask,
GLint sizeMin, GLint sizeMax,
GLint size, GLenum type, GLsizei stride,
GLboolean normalized, GLboolean integer,
const GLvoid *ptr)
{
struct gl_client_array *array;
GLbitfield typeBit;
GLsizei elementSize;
GLenum format = GL_RGBA;
if (_mesa_is_gles(ctx)) {
/* Once Mesa gets support for GL_OES_vertex_half_float this mask will
* change. Adding support for this extension isn't quite as trivial as
* we'd like because ES uses a different enum value for GL_HALF_FLOAT.
*/
legalTypesMask &= ~(FIXED_GL_BIT | HALF_BIT | DOUBLE_BIT);
/* GL_INT and GL_UNSIGNED_INT data is not allowed in OpenGL ES until
* 3.0. The 2_10_10_10 types are added in OpenGL ES 3.0 or
* GL_OES_vertex_type_10_10_10_2.
*/
if (ctx->Version < 30) {
legalTypesMask &= ~(UNSIGNED_INT_BIT
| INT_BIT
| UNSIGNED_INT_2_10_10_10_REV_BIT
| INT_2_10_10_10_REV_BIT);
}
/* BGRA ordering is not supported in ES contexts.
*/
if (sizeMax == BGRA_OR_4)
sizeMax = 4;
} else {
legalTypesMask &= ~FIXED_ES_BIT;
if (!ctx->Extensions.ARB_ES2_compatibility)
legalTypesMask &= ~FIXED_GL_BIT;
if (!ctx->Extensions.ARB_vertex_type_2_10_10_10_rev)
legalTypesMask &= ~(UNSIGNED_INT_2_10_10_10_REV_BIT |
INT_2_10_10_10_REV_BIT);
}
typeBit = type_to_bit(ctx, type);
if (typeBit == 0x0 || (typeBit & legalTypesMask) == 0x0) {
_mesa_error(ctx, GL_INVALID_ENUM, "%s(type = %s)",
func, _mesa_lookup_enum_by_nr(type));
return;
}
/* Do size parameter checking.
* If sizeMax = BGRA_OR_4 it means that size = GL_BGRA is legal and
* must be handled specially.
*/
if (ctx->Extensions.EXT_vertex_array_bgra &&
sizeMax == BGRA_OR_4 &&
size == GL_BGRA) {
GLboolean bgra_error = GL_FALSE;
if (ctx->Extensions.ARB_vertex_type_2_10_10_10_rev) {
if (type != GL_UNSIGNED_INT_2_10_10_10_REV &&
type != GL_INT_2_10_10_10_REV &&
type != GL_UNSIGNED_BYTE)
bgra_error = GL_TRUE;
} else if (type != GL_UNSIGNED_BYTE)
bgra_error = GL_TRUE;
if (bgra_error) {
_mesa_error(ctx, GL_INVALID_VALUE, "%s(GL_BGRA/GLubyte)", func);
return;
}
format = GL_BGRA;
size = 4;
}
else if (size < sizeMin || size > sizeMax || size > 4) {
_mesa_error(ctx, GL_INVALID_VALUE, "%s(size=%d)", func, size);
return;
}
if (ctx->Extensions.ARB_vertex_type_2_10_10_10_rev &&
(type == GL_UNSIGNED_INT_2_10_10_10_REV ||
type == GL_INT_2_10_10_10_REV) && size != 4) {
_mesa_error(ctx, GL_INVALID_OPERATION, "%s(size=%d)", func, size);
return;
}
ASSERT(size <= 4);
if (stride < 0) {
_mesa_error( ctx, GL_INVALID_VALUE, "%s(stride=%d)", func, stride );
return;
}
if (ctx->Array.ArrayObj->ARBsemantics &&
!_mesa_is_bufferobj(ctx->Array.ArrayBufferObj)) {
/* GL_ARB_vertex_array_object requires that all arrays reside in VBOs.
* Generate GL_INVALID_OPERATION if that's not true.
*/
_mesa_error(ctx, GL_INVALID_OPERATION, "%s(non-VBO array)", func);
return;
}
elementSize = _mesa_sizeof_type(type) * size;
array = &ctx->Array.ArrayObj->VertexAttrib[attrib];
array->Size = size;
array->Type = type;
array->Format = format;
array->Stride = stride;
array->StrideB = stride ? stride : elementSize;
array->Normalized = normalized;
array->Integer = integer;
array->Ptr = (const GLubyte *) ptr;
array->_ElementSize = elementSize;
_mesa_reference_buffer_object(ctx, &array->BufferObj,
ctx->Array.ArrayBufferObj);
ctx->NewState |= _NEW_ARRAY;
ctx->Array.ArrayObj->NewArrays |= VERT_BIT(attrib);
}
/**
* Return list of (and count of) all specific texture compression
* formats that are supported.
*
* Some formats are \b not returned by this function. The
* \c GL_COMPRESSED_TEXTURE_FORMATS query only returns formats that are
* "suitable for general-purpose usage." All texture compression extensions
* have taken this to mean either linear RGB or linear RGBA.
*
* The GL_ARB_texture_compress_rgtc spec says:
*
* "19) Should the GL_NUM_COMPRESSED_TEXTURE_FORMATS and
* GL_COMPRESSED_TEXTURE_FORMATS queries return the RGTC formats?
*
* RESOLVED: No.
*
* The OpenGL 2.1 specification says "The only values returned
* by this query [GL_COMPRESSED_TEXTURE_FORMATS"] are those
* corresponding to formats suitable for general-purpose usage.
* The renderer will not enumerate formats with restrictions that
* need to be specifically understood prior to use."
*
* Compressed textures with just red or red-green components are
* not general-purpose so should not be returned by these queries
* because they have restrictions.
*
* Applications that seek to use the RGTC formats should do so
* by looking for this extension's name in the string returned by
* glGetString(GL_EXTENSIONS) rather than
* what GL_NUM_COMPRESSED_TEXTURE_FORMATS and
* GL_COMPRESSED_TEXTURE_FORMATS return."
*
* There is nearly identical wording in the GL_EXT_texture_compression_rgtc
* spec.
*
* The GL_EXT_texture_rRGB spec says:
*
* "22) Should the new COMPRESSED_SRGB_* formats be listed in an
* implementation's GL_COMPRESSED_TEXTURE_FORMATS list?
*
* RESOLVED: No. Section 3.8.1 says formats listed by
* GL_COMPRESSED_TEXTURE_FORMATS are "suitable for general-purpose
* usage." The non-linear distribution of red, green, and
* blue for these sRGB compressed formats makes them not really
* general-purpose."
*
* The GL_EXT_texture_compression_latc spec says:
*
* "16) Should the GL_NUM_COMPRESSED_TEXTURE_FORMATS and
* GL_COMPRESSED_TEXTURE_FORMATS queries return the LATC formats?
*
* RESOLVED: No.
*
* The OpenGL 2.1 specification says "The only values returned
* by this query [GL_COMPRESSED_TEXTURE_FORMATS"] are those
* corresponding to formats suitable for general-purpose usage.
* The renderer will not enumerate formats with restrictions that
* need to be specifically understood prior to use."
*
* Historically, OpenGL implementation have advertised the RGB and
* RGBA versions of the S3TC extensions compressed format tokens
* through this mechanism.
*
* The specification is not sufficiently clear about what "suitable
* for general-purpose usage" means. Historically that seems to mean
* unsigned RGB or unsigned RGBA. The DXT1 format supporting alpha
* (GL_COMPRESSED_RGBA_S3TC_DXT1_EXT) is not exposed in the list (at
* least for NVIDIA drivers) because the alpha is always 1.0 expect
* when it is 0.0 when RGB is required to be black. NVIDIA's even
* limits itself to true linear RGB or RGBA formats, specifically
* not including EXT_texture_sRGB's sRGB S3TC compressed formats.
*
* Adding luminance and luminance-alpha texture formats (and
* certainly signed versions of luminance and luminance-alpha
* formats!) invites potential comptaibility problems with old
* applications using this mechanism since old applications are
* unlikely to expect non-RGB or non-RGBA formats to be advertised
* through this mechanism. However no specific misinteractions
* with old applications is known.
*
* Applications that seek to use the LATC formats should do so
* by looking for this extension's name in the string returned by
* glGetString(GL_EXTENSIONS) rather than
* what GL_NUM_COMPRESSED_TEXTURE_FORMATS and
* GL_COMPRESSED_TEXTURE_FORMATS return."
*
* There is no formal spec for GL_ATI_texture_compression_3dc. Since the
* formats added by this extension are luminance-alpha formats, it is
* reasonable to expect them to follow the same rules as
* GL_EXT_texture_compression_latc. At the very least, Catalyst 11.6 does not
* expose the 3dc formats through this mechanism.
*
* The spec for GL_ARB_texture_compression_bptc doesn't mention whether it
* should be included in GL_COMPRESSED_TEXTURE_FORMATS. However as it takes a
* very long time to compress the textures in this format it's probably not
* very useful as a general format where the GL will have to compress it on
* the fly.
*
* \param ctx the GL context
* \param formats the resulting format list (may be NULL).
*
* \return number of formats.
*/
GLuint
_mesa_get_compressed_formats(struct gl_context *ctx, GLint *formats)
{
GLint discard_formats[100];
GLuint n = 0;
if (!formats) {
formats = discard_formats;
}
if (_mesa_is_desktop_gl(ctx) &&
ctx->Extensions.TDFX_texture_compression_FXT1) {
formats[n++] = GL_COMPRESSED_RGB_FXT1_3DFX;
formats[n++] = GL_COMPRESSED_RGBA_FXT1_3DFX;
}
if (ctx->Extensions.EXT_texture_compression_s3tc) {
formats[n++] = GL_COMPRESSED_RGB_S3TC_DXT1_EXT;
formats[n++] = GL_COMPRESSED_RGBA_S3TC_DXT3_EXT;
formats[n++] = GL_COMPRESSED_RGBA_S3TC_DXT5_EXT;
/* The ES and desktop GL specs diverge here.
*
* In desktop OpenGL, the driver can perform online compression of
* uncompressed texture data. GL_NUM_COMPRESSED_TEXTURE_FORMATS and
* GL_COMPRESSED_TEXTURE_FORMATS give the application a list of
* formats that it could ask the driver to compress with some
* expectation of quality. The GL_ARB_texture_compression spec
* calls this "suitable for general-purpose usage." As noted
* above, this means GL_COMPRESSED_RGBA_S3TC_DXT1_EXT is not
* included in the list.
*
* In OpenGL ES, the driver never performs compression.
* GL_NUM_COMPRESSED_TEXTURE_FORMATS and
* GL_COMPRESSED_TEXTURE_FORMATS give the application a list of
* formats that the driver can receive from the application. It
* is the *complete* list of formats. The
* GL_EXT_texture_compression_s3tc spec says:
*
* "New State for OpenGL ES 2.0.25 and 3.0.2 Specifications
*
* The queries for NUM_COMPRESSED_TEXTURE_FORMATS and
* COMPRESSED_TEXTURE_FORMATS include
* COMPRESSED_RGB_S3TC_DXT1_EXT,
* COMPRESSED_RGBA_S3TC_DXT1_EXT,
* COMPRESSED_RGBA_S3TC_DXT3_EXT, and
* COMPRESSED_RGBA_S3TC_DXT5_EXT."
*
* Note that the addition is only to the OpenGL ES specification!
*/
if (_mesa_is_gles(ctx)) {
formats[n++] = GL_COMPRESSED_RGBA_S3TC_DXT1_EXT;
}
}
/* The GL_OES_compressed_ETC1_RGB8_texture spec says:
*
* "New State
*
* The queries for NUM_COMPRESSED_TEXTURE_FORMATS and
* COMPRESSED_TEXTURE_FORMATS include ETC1_RGB8_OES."
*/
if (_mesa_is_gles(ctx)
&& ctx->Extensions.OES_compressed_ETC1_RGB8_texture) {
formats[n++] = GL_ETC1_RGB8_OES;
}
if (ctx->API == API_OPENGLES) {
formats[n++] = GL_PALETTE4_RGB8_OES;
formats[n++] = GL_PALETTE4_RGBA8_OES;
formats[n++] = GL_PALETTE4_R5_G6_B5_OES;
formats[n++] = GL_PALETTE4_RGBA4_OES;
formats[n++] = GL_PALETTE4_RGB5_A1_OES;
formats[n++] = GL_PALETTE8_RGB8_OES;
formats[n++] = GL_PALETTE8_RGBA8_OES;
formats[n++] = GL_PALETTE8_R5_G6_B5_OES;
formats[n++] = GL_PALETTE8_RGBA4_OES;
formats[n++] = GL_PALETTE8_RGB5_A1_OES;
}
if (_mesa_is_gles3(ctx) || ctx->Extensions.ARB_ES3_compatibility) {
formats[n++] = GL_COMPRESSED_RGB8_ETC2;
formats[n++] = GL_COMPRESSED_RGBA8_ETC2_EAC;
formats[n++] = GL_COMPRESSED_R11_EAC;
formats[n++] = GL_COMPRESSED_RG11_EAC;
formats[n++] = GL_COMPRESSED_SIGNED_R11_EAC;
formats[n++] = GL_COMPRESSED_SIGNED_RG11_EAC;
formats[n++] = GL_COMPRESSED_RGB8_PUNCHTHROUGH_ALPHA1_ETC2;
}
if (_mesa_is_gles3(ctx)) {
formats[n++] = GL_COMPRESSED_SRGB8_ETC2;
formats[n++] = GL_COMPRESSED_SRGB8_ALPHA8_ETC2_EAC;
formats[n++] = GL_COMPRESSED_SRGB8_PUNCHTHROUGH_ALPHA1_ETC2;
}
/* The KHR_texture_compression_astc_hdr spec says:
*
* "Interactions with OpenGL 4.2
*
* OpenGL 4.2 supports the feature that compressed textures can be
* compressed online, by passing the compressed texture format enum
* as the internal format when uploading a texture using TexImage1D,
* TexImage2D or TexImage3D (see Section 3.9.3, Texture Image
* Specification, subsection Encoding of Special Internal Formats).
*
* Due to the complexity of the ASTC compression algorithm, it is
* not usually suitable for online use, and therefore ASTC support
* will be limited to pre-compressed textures only. Where on-device
* compression is required, a domain-specific limited compressor
* will typically be used, and this is therefore not suitable for
* implementation in the driver.
*
* In particular, the ASTC format specifiers will not be added to
* Table 3.14, and thus will not be accepted by the TexImage*D
* functions, and will not be returned by the (already deprecated)
* COMPRESSED_TEXTURE_FORMATS query."
*
* The ES and the desktop specs diverge here. In OpenGL ES, the
* COMPRESSED_TEXTURE_FORMATS query returns the set of supported specific
* compressed formats.
*/
if (ctx->API == API_OPENGLES2 &&
ctx->Extensions.KHR_texture_compression_astc_ldr) {
formats[n++] = GL_COMPRESSED_RGBA_ASTC_4x4_KHR;
formats[n++] = GL_COMPRESSED_RGBA_ASTC_5x4_KHR;
formats[n++] = GL_COMPRESSED_RGBA_ASTC_5x5_KHR;
formats[n++] = GL_COMPRESSED_RGBA_ASTC_6x5_KHR;
formats[n++] = GL_COMPRESSED_RGBA_ASTC_6x6_KHR;
formats[n++] = GL_COMPRESSED_RGBA_ASTC_8x5_KHR;
formats[n++] = GL_COMPRESSED_RGBA_ASTC_8x6_KHR;
formats[n++] = GL_COMPRESSED_RGBA_ASTC_8x8_KHR;
formats[n++] = GL_COMPRESSED_RGBA_ASTC_10x5_KHR;
formats[n++] = GL_COMPRESSED_RGBA_ASTC_10x6_KHR;
formats[n++] = GL_COMPRESSED_RGBA_ASTC_10x8_KHR;
formats[n++] = GL_COMPRESSED_RGBA_ASTC_10x10_KHR;
formats[n++] = GL_COMPRESSED_RGBA_ASTC_12x10_KHR;
formats[n++] = GL_COMPRESSED_RGBA_ASTC_12x12_KHR;
formats[n++] = GL_COMPRESSED_SRGB8_ALPHA8_ASTC_4x4_KHR;
formats[n++] = GL_COMPRESSED_SRGB8_ALPHA8_ASTC_5x4_KHR;
formats[n++] = GL_COMPRESSED_SRGB8_ALPHA8_ASTC_5x5_KHR;
formats[n++] = GL_COMPRESSED_SRGB8_ALPHA8_ASTC_6x5_KHR;
formats[n++] = GL_COMPRESSED_SRGB8_ALPHA8_ASTC_6x6_KHR;
formats[n++] = GL_COMPRESSED_SRGB8_ALPHA8_ASTC_8x5_KHR;
formats[n++] = GL_COMPRESSED_SRGB8_ALPHA8_ASTC_8x6_KHR;
formats[n++] = GL_COMPRESSED_SRGB8_ALPHA8_ASTC_8x8_KHR;
formats[n++] = GL_COMPRESSED_SRGB8_ALPHA8_ASTC_10x5_KHR;
formats[n++] = GL_COMPRESSED_SRGB8_ALPHA8_ASTC_10x6_KHR;
formats[n++] = GL_COMPRESSED_SRGB8_ALPHA8_ASTC_10x8_KHR;
formats[n++] = GL_COMPRESSED_SRGB8_ALPHA8_ASTC_10x10_KHR;
formats[n++] = GL_COMPRESSED_SRGB8_ALPHA8_ASTC_12x10_KHR;
formats[n++] = GL_COMPRESSED_SRGB8_ALPHA8_ASTC_12x12_KHR;
}
if (_mesa_is_gles3(ctx) &&
ctx->Extensions.OES_texture_compression_astc) {
formats[n++] = GL_COMPRESSED_RGBA_ASTC_3x3x3_OES;
formats[n++] = GL_COMPRESSED_RGBA_ASTC_4x3x3_OES;
formats[n++] = GL_COMPRESSED_RGBA_ASTC_4x4x3_OES;
formats[n++] = GL_COMPRESSED_RGBA_ASTC_4x4x4_OES;
formats[n++] = GL_COMPRESSED_RGBA_ASTC_5x4x4_OES;
formats[n++] = GL_COMPRESSED_RGBA_ASTC_5x5x4_OES;
formats[n++] = GL_COMPRESSED_RGBA_ASTC_5x5x5_OES;
formats[n++] = GL_COMPRESSED_RGBA_ASTC_6x5x5_OES;
formats[n++] = GL_COMPRESSED_RGBA_ASTC_6x6x5_OES;
formats[n++] = GL_COMPRESSED_RGBA_ASTC_6x6x6_OES;
formats[n++] = GL_COMPRESSED_SRGB8_ALPHA8_ASTC_3x3x3_OES;
formats[n++] = GL_COMPRESSED_SRGB8_ALPHA8_ASTC_4x3x3_OES;
formats[n++] = GL_COMPRESSED_SRGB8_ALPHA8_ASTC_4x4x3_OES;
formats[n++] = GL_COMPRESSED_SRGB8_ALPHA8_ASTC_4x4x4_OES;
formats[n++] = GL_COMPRESSED_SRGB8_ALPHA8_ASTC_5x4x4_OES;
formats[n++] = GL_COMPRESSED_SRGB8_ALPHA8_ASTC_5x5x4_OES;
formats[n++] = GL_COMPRESSED_SRGB8_ALPHA8_ASTC_5x5x5_OES;
formats[n++] = GL_COMPRESSED_SRGB8_ALPHA8_ASTC_6x5x5_OES;
formats[n++] = GL_COMPRESSED_SRGB8_ALPHA8_ASTC_6x6x5_OES;
formats[n++] = GL_COMPRESSED_SRGB8_ALPHA8_ASTC_6x6x6_OES;
}
assert(n <= ARRAY_SIZE(discard_formats));
return n;
}
void GLAPIENTRY
_mesa_SamplerParameteriv(GLuint sampler, GLenum pname, const GLint *params)
{
struct gl_sampler_object *sampObj;
GLuint res;
GET_CURRENT_CONTEXT(ctx);
sampObj = _mesa_lookup_samplerobj(ctx, sampler);
if (!sampObj) {
/* '3.8.2 Sampler Objects' section of the GL-ES 3.0 specification states:
*
* "An INVALID_OPERATION error is generated if sampler is not the name
* of a sampler object previously returned from a call to GenSamplers."
*
* In desktop GL, an GL_INVALID_VALUE is returned instead.
*/
_mesa_error(ctx, (_mesa_is_gles(ctx) ?
GL_INVALID_OPERATION : GL_INVALID_VALUE),
"glSamplerParameteriv(sampler %u)", sampler);
return;
}
switch (pname) {
case GL_TEXTURE_WRAP_S:
res = set_sampler_wrap_s(ctx, sampObj, params[0]);
break;
case GL_TEXTURE_WRAP_T:
res = set_sampler_wrap_t(ctx, sampObj, params[0]);
break;
case GL_TEXTURE_WRAP_R:
res = set_sampler_wrap_r(ctx, sampObj, params[0]);
break;
case GL_TEXTURE_MIN_FILTER:
res = set_sampler_min_filter(ctx, sampObj, params[0]);
break;
case GL_TEXTURE_MAG_FILTER:
res = set_sampler_mag_filter(ctx, sampObj, params[0]);
break;
case GL_TEXTURE_MIN_LOD:
res = set_sampler_min_lod(ctx, sampObj, (GLfloat) params[0]);
break;
case GL_TEXTURE_MAX_LOD:
res = set_sampler_max_lod(ctx, sampObj, (GLfloat) params[0]);
break;
case GL_TEXTURE_LOD_BIAS:
res = set_sampler_lod_bias(ctx, sampObj, (GLfloat) params[0]);
break;
case GL_TEXTURE_COMPARE_MODE:
res = set_sampler_compare_mode(ctx, sampObj, params[0]);
break;
case GL_TEXTURE_COMPARE_FUNC:
res = set_sampler_compare_func(ctx, sampObj, params[0]);
break;
case GL_TEXTURE_MAX_ANISOTROPY_EXT:
res = set_sampler_max_anisotropy(ctx, sampObj, (GLfloat) params[0]);
break;
case GL_TEXTURE_CUBE_MAP_SEAMLESS:
res = set_sampler_cube_map_seamless(ctx, sampObj, params[0]);
break;
case GL_TEXTURE_SRGB_DECODE_EXT:
res = set_sampler_srgb_decode(ctx, sampObj, params[0]);
break;
case GL_TEXTURE_BORDER_COLOR:
{
GLfloat c[4];
c[0] = INT_TO_FLOAT(params[0]);
c[1] = INT_TO_FLOAT(params[1]);
c[2] = INT_TO_FLOAT(params[2]);
c[3] = INT_TO_FLOAT(params[3]);
res = set_sampler_border_colorf(ctx, sampObj, c);
}
break;
default:
res = INVALID_PNAME;
}
switch (res) {
case GL_FALSE:
/* no change */
break;
case GL_TRUE:
/* state change - we do nothing special at this time */
break;
case INVALID_PNAME:
_mesa_error(ctx, GL_INVALID_ENUM, "glSamplerParameteriv(pname=%s)\n",
_mesa_enum_to_string(pname));
break;
case INVALID_PARAM:
_mesa_error(ctx, GL_INVALID_ENUM, "glSamplerParameteriv(param=%d)\n",
params[0]);
break;
case INVALID_VALUE:
_mesa_error(ctx, GL_INVALID_VALUE, "glSamplerParameteriv(param=%d)\n",
params[0]);
break;
default:
;
}
}
void GLAPIENTRY
_mesa_GetSamplerParameterfv(GLuint sampler, GLenum pname, GLfloat *params)
{
struct gl_sampler_object *sampObj;
GET_CURRENT_CONTEXT(ctx);
sampObj = _mesa_lookup_samplerobj(ctx, sampler);
if (!sampObj) {
/* '3.8.2 Sampler Objects' section of the GL-ES 3.0 specification states:
*
* "An INVALID_OPERATION error is generated if sampler is not the name
* of a sampler object previously returned from a call to GenSamplers."
*
* In desktop GL, an GL_INVALID_VALUE is returned instead.
*/
_mesa_error(ctx, (_mesa_is_gles(ctx) ?
GL_INVALID_OPERATION : GL_INVALID_VALUE),
"glGetSamplerParameterfv(sampler %u)", sampler);
return;
}
switch (pname) {
case GL_TEXTURE_WRAP_S:
*params = (GLfloat) sampObj->WrapS;
break;
case GL_TEXTURE_WRAP_T:
*params = (GLfloat) sampObj->WrapT;
break;
case GL_TEXTURE_WRAP_R:
*params = (GLfloat) sampObj->WrapR;
break;
case GL_TEXTURE_MIN_FILTER:
*params = (GLfloat) sampObj->MinFilter;
break;
case GL_TEXTURE_MAG_FILTER:
*params = (GLfloat) sampObj->MagFilter;
break;
case GL_TEXTURE_MIN_LOD:
*params = sampObj->MinLod;
break;
case GL_TEXTURE_MAX_LOD:
*params = sampObj->MaxLod;
break;
case GL_TEXTURE_LOD_BIAS:
*params = sampObj->LodBias;
break;
case GL_TEXTURE_COMPARE_MODE:
if (!ctx->Extensions.ARB_shadow)
goto invalid_pname;
*params = (GLfloat) sampObj->CompareMode;
break;
case GL_TEXTURE_COMPARE_FUNC:
if (!ctx->Extensions.ARB_shadow)
goto invalid_pname;
*params = (GLfloat) sampObj->CompareFunc;
break;
case GL_TEXTURE_MAX_ANISOTROPY_EXT:
*params = sampObj->MaxAnisotropy;
break;
case GL_TEXTURE_BORDER_COLOR:
params[0] = sampObj->BorderColor.f[0];
params[1] = sampObj->BorderColor.f[1];
params[2] = sampObj->BorderColor.f[2];
params[3] = sampObj->BorderColor.f[3];
break;
case GL_TEXTURE_CUBE_MAP_SEAMLESS:
if (!ctx->Extensions.AMD_seamless_cubemap_per_texture)
goto invalid_pname;
*params = (GLfloat) sampObj->CubeMapSeamless;
break;
case GL_TEXTURE_SRGB_DECODE_EXT:
if (!ctx->Extensions.EXT_texture_sRGB_decode)
goto invalid_pname;
*params = (GLfloat) sampObj->sRGBDecode;
break;
default:
goto invalid_pname;
}
return;
invalid_pname:
_mesa_error(ctx, GL_INVALID_ENUM, "glGetSamplerParameterfv(pname=%s)",
_mesa_enum_to_string(pname));
}
/**
* Test if an image format is a supported compressed format.
* \param format the internal format token provided by the user.
* \return GL_TRUE if compressed, GL_FALSE if uncompressed
*/
GLboolean
_mesa_is_compressed_format(struct gl_context *ctx, GLenum format)
{
switch (format) {
case GL_COMPRESSED_RGB_S3TC_DXT1_EXT:
case GL_COMPRESSED_RGBA_S3TC_DXT1_EXT:
return ctx->Extensions.EXT_texture_compression_s3tc;
case GL_COMPRESSED_RGBA_S3TC_DXT3_EXT:
case GL_COMPRESSED_RGBA_S3TC_DXT5_EXT:
return (_mesa_is_desktop_gl(ctx) &&
ctx->Extensions.EXT_texture_compression_s3tc) ||
(ctx->API == API_OPENGLES2 &&
ctx->Extensions.ANGLE_texture_compression_dxt);
case GL_RGB_S3TC:
case GL_RGB4_S3TC:
case GL_RGBA_S3TC:
case GL_RGBA4_S3TC:
return _mesa_is_desktop_gl(ctx) && ctx->Extensions.S3_s3tc;
case GL_COMPRESSED_SRGB_S3TC_DXT1_EXT:
case GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT1_EXT:
case GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT3_EXT:
case GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT5_EXT:
return _mesa_is_desktop_gl(ctx)
&& ctx->Extensions.EXT_texture_sRGB
&& ctx->Extensions.EXT_texture_compression_s3tc;
case GL_COMPRESSED_RGB_FXT1_3DFX:
case GL_COMPRESSED_RGBA_FXT1_3DFX:
return _mesa_is_desktop_gl(ctx)
&& ctx->Extensions.TDFX_texture_compression_FXT1;
case GL_COMPRESSED_RED_RGTC1:
case GL_COMPRESSED_SIGNED_RED_RGTC1:
case GL_COMPRESSED_RG_RGTC2:
case GL_COMPRESSED_SIGNED_RG_RGTC2:
return _mesa_is_desktop_gl(ctx)
&& ctx->Extensions.ARB_texture_compression_rgtc;
case GL_COMPRESSED_LUMINANCE_LATC1_EXT:
case GL_COMPRESSED_SIGNED_LUMINANCE_LATC1_EXT:
case GL_COMPRESSED_LUMINANCE_ALPHA_LATC2_EXT:
case GL_COMPRESSED_SIGNED_LUMINANCE_ALPHA_LATC2_EXT:
return ctx->API == API_OPENGL_COMPAT
&& ctx->Extensions.EXT_texture_compression_latc;
case GL_COMPRESSED_LUMINANCE_ALPHA_3DC_ATI:
return ctx->API == API_OPENGL_COMPAT
&& ctx->Extensions.ATI_texture_compression_3dc;
case GL_ETC1_RGB8_OES:
return _mesa_is_gles(ctx)
&& ctx->Extensions.OES_compressed_ETC1_RGB8_texture;
case GL_PALETTE4_RGB8_OES:
case GL_PALETTE4_RGBA8_OES:
case GL_PALETTE4_R5_G6_B5_OES:
case GL_PALETTE4_RGBA4_OES:
case GL_PALETTE4_RGB5_A1_OES:
case GL_PALETTE8_RGB8_OES:
case GL_PALETTE8_RGBA8_OES:
case GL_PALETTE8_R5_G6_B5_OES:
case GL_PALETTE8_RGBA4_OES:
case GL_PALETTE8_RGB5_A1_OES:
return ctx->API == API_OPENGLES;
default:
return GL_FALSE;
}
}
void
_mesa_blit_framebuffer(struct gl_context *ctx,
struct gl_framebuffer *readFb,
struct gl_framebuffer *drawFb,
GLint srcX0, GLint srcY0, GLint srcX1, GLint srcY1,
GLint dstX0, GLint dstY0, GLint dstX1, GLint dstY1,
GLbitfield mask, GLenum filter, const char *func)
{
const GLbitfield legalMaskBits = (GL_COLOR_BUFFER_BIT |
GL_DEPTH_BUFFER_BIT |
GL_STENCIL_BUFFER_BIT);
FLUSH_VERTICES(ctx, 0);
/* Update completeness status of readFb and drawFb. */
_mesa_update_framebuffer(ctx, readFb, drawFb);
/* Make sure drawFb has an initialized bounding box. */
_mesa_update_draw_buffer_bounds(ctx, drawFb);
if (!readFb || !drawFb) {
/* This will normally never happen but someday we may want to
* support MakeCurrent() with no drawables.
*/
return;
}
/* check for complete framebuffers */
if (drawFb->_Status != GL_FRAMEBUFFER_COMPLETE_EXT ||
readFb->_Status != GL_FRAMEBUFFER_COMPLETE_EXT) {
_mesa_error(ctx, GL_INVALID_FRAMEBUFFER_OPERATION_EXT,
"%s(incomplete draw/read buffers)", func);
return;
}
if (!is_valid_blit_filter(ctx, filter)) {
_mesa_error(ctx, GL_INVALID_ENUM, "%s(invalid filter %s)", func,
_mesa_enum_to_string(filter));
return;
}
if ((filter == GL_SCALED_RESOLVE_FASTEST_EXT ||
filter == GL_SCALED_RESOLVE_NICEST_EXT) &&
(readFb->Visual.samples == 0 || drawFb->Visual.samples > 0)) {
_mesa_error(ctx, GL_INVALID_OPERATION, "%s(%s: invalid samples)", func,
_mesa_enum_to_string(filter));
return;
}
if (mask & ~legalMaskBits) {
_mesa_error(ctx, GL_INVALID_VALUE, "%s(invalid mask bits set)", func);
return;
}
/* depth/stencil must be blitted with nearest filtering */
if ((mask & (GL_DEPTH_BUFFER_BIT | GL_STENCIL_BUFFER_BIT))
&& filter != GL_NEAREST) {
_mesa_error(ctx, GL_INVALID_OPERATION,
"%s(depth/stencil requires GL_NEAREST filter)", func);
return;
}
/* get color read/draw renderbuffers */
if (mask & GL_COLOR_BUFFER_BIT) {
const GLuint numColorDrawBuffers = drawFb->_NumColorDrawBuffers;
const struct gl_renderbuffer *colorReadRb = readFb->_ColorReadBuffer;
const struct gl_renderbuffer *colorDrawRb = NULL;
GLuint i;
/* From the EXT_framebuffer_object spec:
*
* "If a buffer is specified in <mask> and does not exist in both
* the read and draw framebuffers, the corresponding bit is silently
* ignored."
*/
if (!colorReadRb || numColorDrawBuffers == 0) {
mask &= ~GL_COLOR_BUFFER_BIT;
}
else {
for (i = 0; i < numColorDrawBuffers; i++) {
colorDrawRb = drawFb->_ColorDrawBuffers[i];
if (!colorDrawRb)
continue;
/* Page 193 (page 205 of the PDF) in section 4.3.2 of the OpenGL
* ES 3.0.1 spec says:
*
* "If the source and destination buffers are identical, an
* INVALID_OPERATION error is generated. Different mipmap
* levels of a texture, different layers of a three-
* dimensional texture or two-dimensional array texture, and
* different faces of a cube map texture do not constitute
* identical buffers."
*/
if (_mesa_is_gles3(ctx) && (colorDrawRb == colorReadRb)) {
_mesa_error(ctx, GL_INVALID_OPERATION,
"%s(source and destination color "
"buffer cannot be the same)", func);
return;
}
if (!compatible_color_datatypes(colorReadRb->Format,
colorDrawRb->Format)) {
_mesa_error(ctx, GL_INVALID_OPERATION,
"%s(color buffer datatypes mismatch)", func);
return;
}
/* extra checks for multisample copies... */
if (readFb->Visual.samples > 0 || drawFb->Visual.samples > 0) {
/* color formats must match on GLES. This isn't checked on
* desktop GL because the GL 4.4 spec was changed to allow it.
* In the section entitled “Changes in the released
* Specification of July 22, 2013” it says:
*
* “Relax BlitFramebuffer in section 18.3.1 so that format
* conversion can take place during multisample blits, since
* drivers already allow this and some apps depend on it.”
*/
if (_mesa_is_gles(ctx) &&
!compatible_resolve_formats(colorReadRb, colorDrawRb)) {
_mesa_error(ctx, GL_INVALID_OPERATION,
"%s(bad src/dst multisample pixel formats)", func);
return;
}
}
}
if (filter != GL_NEAREST) {
/* From EXT_framebuffer_multisample_blit_scaled specification:
* "Calling BlitFramebuffer will result in an INVALID_OPERATION error
* if filter is not NEAREST and read buffer contains integer data."
*/
GLenum type = _mesa_get_format_datatype(colorReadRb->Format);
if (type == GL_INT || type == GL_UNSIGNED_INT) {
_mesa_error(ctx, GL_INVALID_OPERATION,
"%s(integer color type)", func);
return;
}
}
}
}
if (mask & GL_STENCIL_BUFFER_BIT) {
struct gl_renderbuffer *readRb =
readFb->Attachment[BUFFER_STENCIL].Renderbuffer;
struct gl_renderbuffer *drawRb =
drawFb->Attachment[BUFFER_STENCIL].Renderbuffer;
/* From the EXT_framebuffer_object spec:
*
* "If a buffer is specified in <mask> and does not exist in both
* the read and draw framebuffers, the corresponding bit is silently
* ignored."
*/
if ((readRb == NULL) || (drawRb == NULL)) {
mask &= ~GL_STENCIL_BUFFER_BIT;
}
else {
int read_z_bits, draw_z_bits;
if (_mesa_is_gles3(ctx) && (drawRb == readRb)) {
_mesa_error(ctx, GL_INVALID_OPERATION,
"%s(source and destination stencil "
"buffer cannot be the same)", func);
return;
}
if (_mesa_get_format_bits(readRb->Format, GL_STENCIL_BITS) !=
_mesa_get_format_bits(drawRb->Format, GL_STENCIL_BITS)) {
/* There is no need to check the stencil datatype here, because
* there is only one: GL_UNSIGNED_INT.
*/
_mesa_error(ctx, GL_INVALID_OPERATION,
"%s(stencil attachment format mismatch)", func);
return;
}
read_z_bits = _mesa_get_format_bits(readRb->Format, GL_DEPTH_BITS);
draw_z_bits = _mesa_get_format_bits(drawRb->Format, GL_DEPTH_BITS);
/* If both buffers also have depth data, the depth formats must match
* as well. If one doesn't have depth, it's not blitted, so we should
* ignore the depth format check.
*/
if (read_z_bits > 0 && draw_z_bits > 0 &&
(read_z_bits != draw_z_bits ||
_mesa_get_format_datatype(readRb->Format) !=
_mesa_get_format_datatype(drawRb->Format))) {
_mesa_error(ctx, GL_INVALID_OPERATION,
"%s(stencil attachment depth format mismatch)", func);
return;
}
}
}
if (mask & GL_DEPTH_BUFFER_BIT) {
struct gl_renderbuffer *readRb =
readFb->Attachment[BUFFER_DEPTH].Renderbuffer;
struct gl_renderbuffer *drawRb =
drawFb->Attachment[BUFFER_DEPTH].Renderbuffer;
/* From the EXT_framebuffer_object spec:
*
* "If a buffer is specified in <mask> and does not exist in both
* the read and draw framebuffers, the corresponding bit is silently
* ignored."
*/
if ((readRb == NULL) || (drawRb == NULL)) {
mask &= ~GL_DEPTH_BUFFER_BIT;
}
else {
int read_s_bit, draw_s_bit;
if (_mesa_is_gles3(ctx) && (drawRb == readRb)) {
_mesa_error(ctx, GL_INVALID_OPERATION,
"%s(source and destination depth "
"buffer cannot be the same)", func);
return;
}
if ((_mesa_get_format_bits(readRb->Format, GL_DEPTH_BITS) !=
_mesa_get_format_bits(drawRb->Format, GL_DEPTH_BITS)) ||
(_mesa_get_format_datatype(readRb->Format) !=
_mesa_get_format_datatype(drawRb->Format))) {
_mesa_error(ctx, GL_INVALID_OPERATION,
"%s(depth attachment format mismatch)", func);
return;
}
read_s_bit = _mesa_get_format_bits(readRb->Format, GL_STENCIL_BITS);
draw_s_bit = _mesa_get_format_bits(drawRb->Format, GL_STENCIL_BITS);
/* If both buffers also have stencil data, the stencil formats must
* match as well. If one doesn't have stencil, it's not blitted, so
* we should ignore the stencil format check.
*/
if (read_s_bit > 0 && draw_s_bit > 0 && read_s_bit != draw_s_bit) {
_mesa_error(ctx, GL_INVALID_OPERATION,
"%s(depth attachment stencil bits mismatch)", func);
return;
}
}
}
if (_mesa_is_gles3(ctx)) {
/* Page 194 (page 206 of the PDF) in section 4.3.2 of the OpenGL ES
* 3.0.1 spec says:
*
* "If SAMPLE_BUFFERS for the draw framebuffer is greater than zero,
* an INVALID_OPERATION error is generated."
*/
if (drawFb->Visual.samples > 0) {
_mesa_error(ctx, GL_INVALID_OPERATION,
"%s(destination samples must be 0)", func);
return;
}
/* Page 194 (page 206 of the PDF) in section 4.3.2 of the OpenGL ES
* 3.0.1 spec says:
*
* "If SAMPLE_BUFFERS for the read framebuffer is greater than zero,
* no copy is performed and an INVALID_OPERATION error is generated
* if the formats of the read and draw framebuffers are not
* identical or if the source and destination rectangles are not
* defined with the same (X0, Y0) and (X1, Y1) bounds."
*
* The format check was made above because desktop OpenGL has the same
* requirement.
*/
if (readFb->Visual.samples > 0
&& (srcX0 != dstX0 || srcY0 != dstY0
|| srcX1 != dstX1 || srcY1 != dstY1)) {
_mesa_error(ctx, GL_INVALID_OPERATION,
"%s(bad src/dst multisample region)", func);
return;
}
} else {
if (readFb->Visual.samples > 0 &&
drawFb->Visual.samples > 0 &&
readFb->Visual.samples != drawFb->Visual.samples) {
_mesa_error(ctx, GL_INVALID_OPERATION,
"%s(mismatched samples)", func);
return;
}
/* extra checks for multisample copies... */
if ((readFb->Visual.samples > 0 || drawFb->Visual.samples > 0) &&
(filter == GL_NEAREST || filter == GL_LINEAR)) {
/* src and dest region sizes must be the same */
if (abs(srcX1 - srcX0) != abs(dstX1 - dstX0) ||
abs(srcY1 - srcY0) != abs(dstY1 - dstY0)) {
_mesa_error(ctx, GL_INVALID_OPERATION,
"%s(bad src/dst multisample region sizes)", func);
return;
}
}
}
/* Debug code */
if (DEBUG_BLIT) {
const struct gl_renderbuffer *colorReadRb = readFb->_ColorReadBuffer;
const struct gl_renderbuffer *colorDrawRb = NULL;
GLuint i = 0;
printf("%s(%d, %d, %d, %d, %d, %d, %d, %d,"
" 0x%x, 0x%x)\n", func,
srcX0, srcY0, srcX1, srcY1,
dstX0, dstY0, dstX1, dstY1,
mask, filter);
if (colorReadRb) {
const struct gl_renderbuffer_attachment *att;
att = find_attachment(readFb, colorReadRb);
printf(" Src FBO %u RB %u (%dx%d) ",
readFb->Name, colorReadRb->Name,
colorReadRb->Width, colorReadRb->Height);
if (att && att->Texture) {
printf("Tex %u tgt 0x%x level %u face %u",
att->Texture->Name,
att->Texture->Target,
att->TextureLevel,
att->CubeMapFace);
}
printf("\n");
/* Print all active color render buffers */
for (i = 0; i < drawFb->_NumColorDrawBuffers; i++) {
colorDrawRb = drawFb->_ColorDrawBuffers[i];
if (!colorDrawRb)
continue;
att = find_attachment(drawFb, colorDrawRb);
printf(" Dst FBO %u RB %u (%dx%d) ",
drawFb->Name, colorDrawRb->Name,
colorDrawRb->Width, colorDrawRb->Height);
if (att && att->Texture) {
printf("Tex %u tgt 0x%x level %u face %u",
att->Texture->Name,
att->Texture->Target,
att->TextureLevel,
att->CubeMapFace);
}
printf("\n");
}
}
}
if (!mask ||
(srcX1 - srcX0) == 0 || (srcY1 - srcY0) == 0 ||
(dstX1 - dstX0) == 0 || (dstY1 - dstY0) == 0) {
return;
}
assert(ctx->Driver.BlitFramebuffer);
ctx->Driver.BlitFramebuffer(ctx, readFb, drawFb,
srcX0, srcY0, srcX1, srcY1,
dstX0, dstY0, dstX1, dstY1,
mask, filter);
}
/**
* Choose an appropriate texture format given the format, type and
* internalFormat parameters passed to glTexImage().
*
* \param ctx the GL context.
* \param internalFormat user's prefered internal texture format.
* \param format incoming image pixel format.
* \param type incoming image data type.
*
* \return a pointer to a gl_texture_format object which describes the
* choosen texture format, or NULL on failure.
*
* This is called via dd_function_table::ChooseTextureFormat. Hardware drivers
* will typically override this function with a specialized version.
*/
gl_format
_mesa_choose_tex_format(struct gl_context *ctx, GLenum target,
GLint internalFormat, GLenum format, GLenum type)
{
(void) format;
(void) type;
switch (internalFormat) {
/* shallow RGBA formats */
case 4:
case GL_RGBA:
if (type == GL_UNSIGNED_SHORT_4_4_4_4_REV) {
RETURN_IF_SUPPORTED(MESA_FORMAT_ARGB4444);
} else if (type == GL_UNSIGNED_SHORT_1_5_5_5_REV) {
RETURN_IF_SUPPORTED(MESA_FORMAT_ARGB1555);
} else if (type == GL_UNSIGNED_INT_2_10_10_10_REV) {
RETURN_IF_SUPPORTED(MESA_FORMAT_ARGB2101010);
}
RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA8888);
RETURN_IF_SUPPORTED(MESA_FORMAT_ARGB8888);
break;
case GL_RGBA8:
RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA8888);
RETURN_IF_SUPPORTED(MESA_FORMAT_ARGB8888);
break;
case GL_RGB5_A1:
RETURN_IF_SUPPORTED(MESA_FORMAT_ARGB1555);
break;
case GL_RGBA2:
RETURN_IF_SUPPORTED(MESA_FORMAT_ARGB4444_REV); /* just to test another format*/
RETURN_IF_SUPPORTED(MESA_FORMAT_ARGB4444);
break;
case GL_RGBA4:
RETURN_IF_SUPPORTED(MESA_FORMAT_ARGB4444);
break;
/* deep RGBA formats */
case GL_RGB10_A2:
RETURN_IF_SUPPORTED(MESA_FORMAT_ARGB2101010);
RETURN_IF_SUPPORTED(MESA_FORMAT_ARGB8888);
break;
case GL_RGBA12:
case GL_RGBA16:
RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_16);
RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_16);
RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA8888);
RETURN_IF_SUPPORTED(MESA_FORMAT_ARGB8888);
break;
/* shallow RGB formats */
case 3:
case GL_RGB:
if (type == GL_UNSIGNED_INT_2_10_10_10_REV) {
RETURN_IF_SUPPORTED(MESA_FORMAT_ARGB2101010);
}
/* fallthrough */
case GL_RGB8:
RETURN_IF_SUPPORTED(MESA_FORMAT_RGB888);
RETURN_IF_SUPPORTED(MESA_FORMAT_XRGB8888);
RETURN_IF_SUPPORTED(MESA_FORMAT_ARGB8888);
break;
case GL_R3_G3_B2:
RETURN_IF_SUPPORTED(MESA_FORMAT_RGB332);
RETURN_IF_SUPPORTED(MESA_FORMAT_RGB565);
RETURN_IF_SUPPORTED(MESA_FORMAT_RGB565_REV);
RETURN_IF_SUPPORTED(MESA_FORMAT_RGB888);
RETURN_IF_SUPPORTED(MESA_FORMAT_XRGB8888);
RETURN_IF_SUPPORTED(MESA_FORMAT_ARGB8888);
break;
case GL_RGB4:
RETURN_IF_SUPPORTED(MESA_FORMAT_RGB565_REV); /* just to test another format */
RETURN_IF_SUPPORTED(MESA_FORMAT_RGB565);
break;
case GL_RGB5:
RETURN_IF_SUPPORTED(MESA_FORMAT_RGB565);
break;
/* deep RGB formats */
case GL_RGB10:
case GL_RGB12:
case GL_RGB16:
RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_16);
RETURN_IF_SUPPORTED(MESA_FORMAT_XRGB8888);
RETURN_IF_SUPPORTED(MESA_FORMAT_ARGB8888);
break;
/* Alpha formats */
case GL_ALPHA:
case GL_ALPHA4:
case GL_ALPHA8:
RETURN_IF_SUPPORTED(MESA_FORMAT_A8);
break;
case GL_ALPHA12:
case GL_ALPHA16:
RETURN_IF_SUPPORTED(MESA_FORMAT_A16);
RETURN_IF_SUPPORTED(MESA_FORMAT_A8);
break;
/* Luminance formats */
case 1:
case GL_LUMINANCE:
case GL_LUMINANCE4:
case GL_LUMINANCE8:
RETURN_IF_SUPPORTED(MESA_FORMAT_L8);
break;
case GL_LUMINANCE12:
case GL_LUMINANCE16:
RETURN_IF_SUPPORTED(MESA_FORMAT_L16);
RETURN_IF_SUPPORTED(MESA_FORMAT_L8);
break;
/* Luminance/Alpha formats */
case GL_LUMINANCE4_ALPHA4:
RETURN_IF_SUPPORTED(MESA_FORMAT_AL44);
RETURN_IF_SUPPORTED(MESA_FORMAT_AL88);
break;
case 2:
case GL_LUMINANCE_ALPHA:
case GL_LUMINANCE6_ALPHA2:
case GL_LUMINANCE8_ALPHA8:
RETURN_IF_SUPPORTED(MESA_FORMAT_AL88);
break;
case GL_LUMINANCE12_ALPHA4:
case GL_LUMINANCE12_ALPHA12:
case GL_LUMINANCE16_ALPHA16:
RETURN_IF_SUPPORTED(MESA_FORMAT_AL1616);
RETURN_IF_SUPPORTED(MESA_FORMAT_AL88);
break;
case GL_INTENSITY:
case GL_INTENSITY4:
case GL_INTENSITY8:
RETURN_IF_SUPPORTED(MESA_FORMAT_I8);
break;
case GL_INTENSITY12:
case GL_INTENSITY16:
RETURN_IF_SUPPORTED(MESA_FORMAT_I16);
RETURN_IF_SUPPORTED(MESA_FORMAT_I8);
break;
default:
; /* fallthrough */
}
if (ctx->Extensions.ARB_depth_texture) {
switch (internalFormat) {
case GL_DEPTH_COMPONENT:
case GL_DEPTH_COMPONENT24:
case GL_DEPTH_COMPONENT32:
RETURN_IF_SUPPORTED(MESA_FORMAT_Z32);
RETURN_IF_SUPPORTED(MESA_FORMAT_X8_Z24);
RETURN_IF_SUPPORTED(MESA_FORMAT_S8_Z24);
break;
case GL_DEPTH_COMPONENT16:
RETURN_IF_SUPPORTED(MESA_FORMAT_Z16);
RETURN_IF_SUPPORTED(MESA_FORMAT_X8_Z24);
RETURN_IF_SUPPORTED(MESA_FORMAT_S8_Z24);
default:
; /* fallthrough */
}
}
switch (internalFormat) {
case GL_COMPRESSED_ALPHA_ARB:
RETURN_IF_SUPPORTED(MESA_FORMAT_A8);
break;
case GL_COMPRESSED_LUMINANCE_ARB:
RETURN_IF_SUPPORTED(MESA_FORMAT_L8);
break;
case GL_COMPRESSED_LUMINANCE_ALPHA_ARB:
RETURN_IF_SUPPORTED(MESA_FORMAT_AL88);
break;
case GL_COMPRESSED_INTENSITY_ARB:
RETURN_IF_SUPPORTED(MESA_FORMAT_I8);
break;
case GL_COMPRESSED_RGB_ARB:
/* We don't use texture compression for 1D and 1D array textures.
* For 1D textures, compressions doesn't buy us much.
* For 1D ARRAY textures, there's complicated issues with updating
* sub-regions on non-block boundaries with glCopyTexSubImage, among
* other issues. FWIW, the GL_EXT_texture_array extension prohibits
* 1D ARRAY textures in S3TC format.
*/
if (target != GL_TEXTURE_1D && target != GL_TEXTURE_1D_ARRAY) {
if (ctx->Extensions.EXT_texture_compression_s3tc ||
ctx->Extensions.ANGLE_texture_compression_dxt)
RETURN_IF_SUPPORTED(MESA_FORMAT_RGB_DXT1);
if (ctx->Extensions.TDFX_texture_compression_FXT1)
RETURN_IF_SUPPORTED(MESA_FORMAT_RGB_FXT1);
}
RETURN_IF_SUPPORTED(MESA_FORMAT_RGB888);
RETURN_IF_SUPPORTED(MESA_FORMAT_XRGB8888);
RETURN_IF_SUPPORTED(MESA_FORMAT_ARGB8888);
break;
case GL_COMPRESSED_RGBA_ARB:
/* We don't use texture compression for 1D and 1D array textures. */
if (target != GL_TEXTURE_1D && target != GL_TEXTURE_1D_ARRAY) {
if (ctx->Extensions.EXT_texture_compression_s3tc ||
ctx->Extensions.ANGLE_texture_compression_dxt)
RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_DXT3); /* Not rgba_dxt1, see spec */
if (ctx->Extensions.TDFX_texture_compression_FXT1)
RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FXT1);
}
RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA8888);
RETURN_IF_SUPPORTED(MESA_FORMAT_ARGB8888);
break;
default:
; /* fallthrough */
}
if (ctx->Extensions.ARB_ES2_compatibility) {
switch (internalFormat) {
case GL_RGB565:
RETURN_IF_SUPPORTED(MESA_FORMAT_RGB565);
break;
default:
; /* fallthrough */
}
}
if (ctx->Extensions.MESA_ycbcr_texture) {
if (internalFormat == GL_YCBCR_MESA) {
if (type == GL_UNSIGNED_SHORT_8_8_MESA)
RETURN_IF_SUPPORTED(MESA_FORMAT_YCBCR);
else
RETURN_IF_SUPPORTED(MESA_FORMAT_YCBCR_REV);
}
}
/* For non-generic compressed format we assert two things:
*
* 1. The format has already been validated against the set of available
* extensions.
*
* 2. The driver only enables the extension if it supports all of the
* formats that are part of that extension.
*/
switch (internalFormat) {
case GL_COMPRESSED_RGB_FXT1_3DFX:
return MESA_FORMAT_RGB_FXT1;
case GL_COMPRESSED_RGBA_FXT1_3DFX:
return MESA_FORMAT_RGBA_FXT1;
case GL_COMPRESSED_RGB_S3TC_DXT1_EXT:
case GL_RGB_S3TC:
case GL_RGB4_S3TC:
return MESA_FORMAT_RGB_DXT1;
case GL_COMPRESSED_RGBA_S3TC_DXT1_EXT:
return MESA_FORMAT_RGBA_DXT1;
case GL_COMPRESSED_RGBA_S3TC_DXT3_EXT:
case GL_RGBA_S3TC:
case GL_RGBA4_S3TC:
return MESA_FORMAT_RGBA_DXT3;
case GL_COMPRESSED_RGBA_S3TC_DXT5_EXT:
return MESA_FORMAT_RGBA_DXT5;
case GL_COMPRESSED_RED_RGTC1:
return MESA_FORMAT_RED_RGTC1;
case GL_COMPRESSED_SIGNED_RED_RGTC1:
return MESA_FORMAT_SIGNED_RED_RGTC1;
case GL_COMPRESSED_RG_RGTC2:
return MESA_FORMAT_RG_RGTC2;
case GL_COMPRESSED_SIGNED_RG_RGTC2:
return MESA_FORMAT_SIGNED_RG_RGTC2;
case GL_COMPRESSED_LUMINANCE_LATC1_EXT:
return MESA_FORMAT_L_LATC1;
case GL_COMPRESSED_SIGNED_LUMINANCE_LATC1_EXT:
return MESA_FORMAT_SIGNED_L_LATC1;
case GL_COMPRESSED_LUMINANCE_ALPHA_LATC2_EXT:
return MESA_FORMAT_LA_LATC2;
case GL_COMPRESSED_SIGNED_LUMINANCE_ALPHA_LATC2_EXT:
return MESA_FORMAT_SIGNED_LA_LATC2;
case GL_COMPRESSED_LUMINANCE_ALPHA_3DC_ATI:
return MESA_FORMAT_LA_LATC2;
case GL_ETC1_RGB8_OES:
return MESA_FORMAT_ETC1_RGB8;
case GL_COMPRESSED_RGB8_ETC2:
return MESA_FORMAT_ETC2_RGB8;
case GL_COMPRESSED_SRGB8_ETC2:
return MESA_FORMAT_ETC2_SRGB8;
case GL_COMPRESSED_RGBA8_ETC2_EAC:
return MESA_FORMAT_ETC2_RGBA8_EAC;
case GL_COMPRESSED_SRGB8_ALPHA8_ETC2_EAC:
return MESA_FORMAT_ETC2_SRGB8_ALPHA8_EAC;
case GL_COMPRESSED_R11_EAC:
return MESA_FORMAT_ETC2_R11_EAC;
case GL_COMPRESSED_RG11_EAC:
return MESA_FORMAT_ETC2_RG11_EAC;
case GL_COMPRESSED_SIGNED_R11_EAC:
return MESA_FORMAT_ETC2_SIGNED_R11_EAC;
case GL_COMPRESSED_SIGNED_RG11_EAC:
return MESA_FORMAT_ETC2_SIGNED_RG11_EAC;
case GL_COMPRESSED_RGB8_PUNCHTHROUGH_ALPHA1_ETC2:
return MESA_FORMAT_ETC2_RGB8_PUNCHTHROUGH_ALPHA1;
case GL_COMPRESSED_SRGB8_PUNCHTHROUGH_ALPHA1_ETC2:
return MESA_FORMAT_ETC2_SRGB8_PUNCHTHROUGH_ALPHA1;
case GL_COMPRESSED_SRGB_S3TC_DXT1_EXT:
return MESA_FORMAT_SRGB_DXT1;
case GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT1_EXT:
return MESA_FORMAT_SRGBA_DXT1;
case GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT3_EXT:
return MESA_FORMAT_SRGBA_DXT3;
case GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT5_EXT:
return MESA_FORMAT_SRGBA_DXT5;
default:
; /* fallthrough */
}
if (ctx->Extensions.ARB_texture_float) {
switch (internalFormat) {
case GL_ALPHA16F_ARB:
RETURN_IF_SUPPORTED(MESA_FORMAT_ALPHA_FLOAT16);
RETURN_IF_SUPPORTED(MESA_FORMAT_ALPHA_FLOAT32);
RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FLOAT16);
RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FLOAT32);
break;
case GL_ALPHA32F_ARB:
RETURN_IF_SUPPORTED(MESA_FORMAT_ALPHA_FLOAT32);
RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FLOAT32);
RETURN_IF_SUPPORTED(MESA_FORMAT_ALPHA_FLOAT16);
RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FLOAT16);
break;
case GL_LUMINANCE16F_ARB:
RETURN_IF_SUPPORTED(MESA_FORMAT_LUMINANCE_FLOAT16);
RETURN_IF_SUPPORTED(MESA_FORMAT_LUMINANCE_FLOAT32);
RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FLOAT16);
RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FLOAT32);
break;
case GL_LUMINANCE32F_ARB:
RETURN_IF_SUPPORTED(MESA_FORMAT_LUMINANCE_FLOAT32);
RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FLOAT32);
RETURN_IF_SUPPORTED(MESA_FORMAT_LUMINANCE_FLOAT16);
RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FLOAT16);
break;
case GL_LUMINANCE_ALPHA16F_ARB:
RETURN_IF_SUPPORTED(MESA_FORMAT_LUMINANCE_ALPHA_FLOAT16);
RETURN_IF_SUPPORTED(MESA_FORMAT_LUMINANCE_ALPHA_FLOAT32);
RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FLOAT16);
RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FLOAT32);
break;
case GL_LUMINANCE_ALPHA32F_ARB:
RETURN_IF_SUPPORTED(MESA_FORMAT_LUMINANCE_ALPHA_FLOAT32);
RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FLOAT32);
RETURN_IF_SUPPORTED(MESA_FORMAT_LUMINANCE_ALPHA_FLOAT16);
RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FLOAT16);
break;
case GL_INTENSITY16F_ARB:
RETURN_IF_SUPPORTED(MESA_FORMAT_INTENSITY_FLOAT16);
RETURN_IF_SUPPORTED(MESA_FORMAT_INTENSITY_FLOAT32);
RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FLOAT16);
RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FLOAT32);
break;
case GL_INTENSITY32F_ARB:
RETURN_IF_SUPPORTED(MESA_FORMAT_INTENSITY_FLOAT32);
RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FLOAT32);
RETURN_IF_SUPPORTED(MESA_FORMAT_INTENSITY_FLOAT16);
RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FLOAT16);
break;
case GL_RGB16F_ARB:
RETURN_IF_SUPPORTED(MESA_FORMAT_RGB_FLOAT16);
RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FLOAT16);
RETURN_IF_SUPPORTED(MESA_FORMAT_RGB_FLOAT32);
RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FLOAT32);
break;
case GL_RGB32F_ARB:
RETURN_IF_SUPPORTED(MESA_FORMAT_RGB_FLOAT32);
RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FLOAT32);
RETURN_IF_SUPPORTED(MESA_FORMAT_RGB_FLOAT16);
RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FLOAT16);
break;
case GL_RGBA16F_ARB:
RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FLOAT16);
RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FLOAT32);
break;
case GL_RGBA32F_ARB:
RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FLOAT32);
RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FLOAT16);
break;
default:
; /* fallthrough */
}
}
if (ctx->Extensions.EXT_texture_shared_exponent) {
switch (internalFormat) {
case GL_RGB9_E5:
ASSERT(ctx->TextureFormatSupported[MESA_FORMAT_RGB9_E5_FLOAT]);
return MESA_FORMAT_RGB9_E5_FLOAT;
default:
; /* fallthrough */
}
}
if (ctx->Extensions.EXT_packed_float) {
switch (internalFormat) {
case GL_R11F_G11F_B10F:
ASSERT(ctx->TextureFormatSupported[MESA_FORMAT_R11_G11_B10_FLOAT]);
return MESA_FORMAT_R11_G11_B10_FLOAT;
default:
; /* fallthrough */
}
}
if (ctx->Extensions.EXT_packed_depth_stencil) {
switch (internalFormat) {
case GL_DEPTH_STENCIL_EXT:
case GL_DEPTH24_STENCIL8_EXT:
RETURN_IF_SUPPORTED(MESA_FORMAT_Z24_S8);
RETURN_IF_SUPPORTED(MESA_FORMAT_S8_Z24);
break;
default:
; /* fallthrough */
}
}
if (ctx->Extensions.ARB_depth_buffer_float) {
switch (internalFormat) {
case GL_DEPTH_COMPONENT32F:
ASSERT(ctx->TextureFormatSupported[MESA_FORMAT_Z32_FLOAT]);
return MESA_FORMAT_Z32_FLOAT;
case GL_DEPTH32F_STENCIL8:
ASSERT(ctx->TextureFormatSupported[MESA_FORMAT_Z32_FLOAT_X24S8]);
return MESA_FORMAT_Z32_FLOAT_X24S8;
default:
; /* fallthrough */
}
}
if (ctx->Extensions.ATI_envmap_bumpmap) {
switch (internalFormat) {
case GL_DUDV_ATI:
case GL_DU8DV8_ATI:
RETURN_IF_SUPPORTED(MESA_FORMAT_DUDV8);
break;
default:
; /* fallthrough */
}
}
if (ctx->Extensions.EXT_texture_snorm) {
switch (internalFormat) {
case GL_RED_SNORM:
case GL_R8_SNORM:
RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_R8);
break;
case GL_RG_SNORM:
case GL_RG8_SNORM:
RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_RG88_REV);
break;
case GL_RGB_SNORM:
case GL_RGB8_SNORM:
RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_RGBX8888);
/* FALLTHROUGH */
case GL_RGBA_SNORM:
case GL_RGBA8_SNORM:
RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_RGBA8888);
RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_RGBA8888_REV);
break;
case GL_ALPHA_SNORM:
case GL_ALPHA8_SNORM:
RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_A8);
RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_RGBA8888);
RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_RGBA8888_REV);
break;
case GL_LUMINANCE_SNORM:
case GL_LUMINANCE8_SNORM:
RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_L8);
RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_RGBX8888);
RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_RGBA8888);
RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_RGBA8888_REV);
break;
case GL_LUMINANCE_ALPHA_SNORM:
case GL_LUMINANCE8_ALPHA8_SNORM:
RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_AL88);
RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_RGBA8888);
RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_RGBA8888_REV);
break;
case GL_INTENSITY_SNORM:
case GL_INTENSITY8_SNORM:
RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_I8);
RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_RGBA8888);
RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_RGBA8888_REV);
break;
case GL_R16_SNORM:
RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_R16);
break;
case GL_RG16_SNORM:
RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_GR1616);
break;
case GL_RGB16_SNORM:
RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_RGB_16);
/* FALLTHROUGH */
case GL_RGBA16_SNORM:
RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_RGBA_16);
RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_RGBA8888);
RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_RGBA8888_REV);
break;
case GL_ALPHA16_SNORM:
RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_A16);
RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_RGBA_16);
RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_RGBA8888);
RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_RGBA8888_REV);
break;
case GL_LUMINANCE16_SNORM:
RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_L16);
/* FALLTHROUGH */
case GL_LUMINANCE16_ALPHA16_SNORM:
RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_AL1616);
RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_RGBA_16);
RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_RGBA8888);
RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_RGBA8888_REV);
break;
case GL_INTENSITY16_SNORM:
RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_I16);
RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_RGBA_16);
RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_RGBA8888);
RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_RGBA8888_REV);
break;
default:
; /* fall-through */
}
}
if (ctx->Extensions.EXT_texture_sRGB) {
switch (internalFormat) {
case GL_SRGB_EXT:
case GL_SRGB8_EXT:
RETURN_IF_SUPPORTED(MESA_FORMAT_SRGB8);
RETURN_IF_SUPPORTED(MESA_FORMAT_SARGB8);
break;
case GL_SRGB_ALPHA_EXT:
case GL_SRGB8_ALPHA8_EXT:
RETURN_IF_SUPPORTED(MESA_FORMAT_SRGBA8);
RETURN_IF_SUPPORTED(MESA_FORMAT_SARGB8);
break;
case GL_SLUMINANCE_EXT:
case GL_SLUMINANCE8_EXT:
RETURN_IF_SUPPORTED(MESA_FORMAT_SL8);
RETURN_IF_SUPPORTED(MESA_FORMAT_SARGB8);
break;
case GL_SLUMINANCE_ALPHA_EXT:
case GL_SLUMINANCE8_ALPHA8_EXT:
RETURN_IF_SUPPORTED(MESA_FORMAT_SLA8);
RETURN_IF_SUPPORTED(MESA_FORMAT_SARGB8);
break;
case GL_COMPRESSED_SLUMINANCE_EXT:
RETURN_IF_SUPPORTED(MESA_FORMAT_SL8);
RETURN_IF_SUPPORTED(MESA_FORMAT_SARGB8);
break;
case GL_COMPRESSED_SLUMINANCE_ALPHA_EXT:
RETURN_IF_SUPPORTED(MESA_FORMAT_SLA8);
RETURN_IF_SUPPORTED(MESA_FORMAT_SARGB8);
break;
case GL_COMPRESSED_SRGB_EXT:
if (ctx->Extensions.EXT_texture_compression_s3tc)
RETURN_IF_SUPPORTED(MESA_FORMAT_SRGB_DXT1);
RETURN_IF_SUPPORTED(MESA_FORMAT_SRGB8);
RETURN_IF_SUPPORTED(MESA_FORMAT_SARGB8);
break;
case GL_COMPRESSED_SRGB_ALPHA_EXT:
if (ctx->Extensions.EXT_texture_compression_s3tc)
RETURN_IF_SUPPORTED(MESA_FORMAT_SRGBA_DXT3); /* Not srgba_dxt1, see spec */
RETURN_IF_SUPPORTED(MESA_FORMAT_SRGBA8);
RETURN_IF_SUPPORTED(MESA_FORMAT_SARGB8);
break;
default:
; /* fallthrough */
}
}
if (ctx->Extensions.EXT_texture_integer) {
switch (internalFormat) {
case GL_ALPHA8UI_EXT:
RETURN_IF_SUPPORTED(MESA_FORMAT_ALPHA_UINT8);
RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_UINT8);
break;
case GL_ALPHA16UI_EXT:
RETURN_IF_SUPPORTED(MESA_FORMAT_ALPHA_UINT16);
RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_UINT16);
break;
case GL_ALPHA32UI_EXT:
RETURN_IF_SUPPORTED(MESA_FORMAT_ALPHA_UINT32);
RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_UINT32);
break;
case GL_ALPHA8I_EXT:
RETURN_IF_SUPPORTED(MESA_FORMAT_ALPHA_INT8);
RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_INT8);
break;
case GL_ALPHA16I_EXT:
RETURN_IF_SUPPORTED(MESA_FORMAT_ALPHA_INT16);
RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_INT16);
break;
case GL_ALPHA32I_EXT:
RETURN_IF_SUPPORTED(MESA_FORMAT_ALPHA_INT32);
RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_INT32);
break;
case GL_LUMINANCE8UI_EXT:
RETURN_IF_SUPPORTED(MESA_FORMAT_LUMINANCE_UINT8);
RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_UINT8);
break;
case GL_LUMINANCE16UI_EXT:
RETURN_IF_SUPPORTED(MESA_FORMAT_LUMINANCE_UINT16);
RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_UINT16);
break;
case GL_LUMINANCE32UI_EXT:
RETURN_IF_SUPPORTED(MESA_FORMAT_LUMINANCE_UINT32);
RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_UINT32);
break;
case GL_LUMINANCE8I_EXT:
RETURN_IF_SUPPORTED(MESA_FORMAT_LUMINANCE_INT8);
RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_INT8);
break;
case GL_LUMINANCE16I_EXT:
RETURN_IF_SUPPORTED(MESA_FORMAT_LUMINANCE_INT16);
RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_INT16);
break;
case GL_LUMINANCE32I_EXT:
RETURN_IF_SUPPORTED(MESA_FORMAT_LUMINANCE_INT32);
RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_INT32);
break;
case GL_LUMINANCE_ALPHA8UI_EXT:
RETURN_IF_SUPPORTED(MESA_FORMAT_LUMINANCE_ALPHA_UINT8);
RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_UINT8);
break;
case GL_LUMINANCE_ALPHA16UI_EXT:
RETURN_IF_SUPPORTED(MESA_FORMAT_LUMINANCE_ALPHA_UINT16);
RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_UINT16);
break;
case GL_LUMINANCE_ALPHA32UI_EXT:
RETURN_IF_SUPPORTED(MESA_FORMAT_LUMINANCE_ALPHA_UINT32);
RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_UINT32);
break;
case GL_LUMINANCE_ALPHA8I_EXT:
RETURN_IF_SUPPORTED(MESA_FORMAT_LUMINANCE_ALPHA_INT8);
RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_INT8);
break;
case GL_LUMINANCE_ALPHA16I_EXT:
RETURN_IF_SUPPORTED(MESA_FORMAT_LUMINANCE_ALPHA_INT16);
RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_INT16);
break;
case GL_LUMINANCE_ALPHA32I_EXT:
RETURN_IF_SUPPORTED(MESA_FORMAT_LUMINANCE_ALPHA_INT32);
RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_INT32);
break;
case GL_INTENSITY8UI_EXT:
RETURN_IF_SUPPORTED(MESA_FORMAT_INTENSITY_UINT8);
RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_UINT8);
break;
case GL_INTENSITY16UI_EXT:
RETURN_IF_SUPPORTED(MESA_FORMAT_INTENSITY_UINT16);
RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_UINT16);
break;
case GL_INTENSITY32UI_EXT:
RETURN_IF_SUPPORTED(MESA_FORMAT_INTENSITY_UINT32);
RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_UINT32);
break;
case GL_INTENSITY8I_EXT:
RETURN_IF_SUPPORTED(MESA_FORMAT_INTENSITY_INT8);
RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_INT8);
break;
case GL_INTENSITY16I_EXT:
RETURN_IF_SUPPORTED(MESA_FORMAT_INTENSITY_INT16);
RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_INT16);
break;
case GL_INTENSITY32I_EXT:
RETURN_IF_SUPPORTED(MESA_FORMAT_INTENSITY_INT32);
RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_INT32);
break;
}
}
if (ctx->Version >= 30 ||
ctx->Extensions.EXT_texture_integer) {
switch (internalFormat) {
case GL_RGB8UI_EXT:
RETURN_IF_SUPPORTED(MESA_FORMAT_RGB_UINT8);
RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_UINT8);
break;
case GL_RGB16UI_EXT:
RETURN_IF_SUPPORTED(MESA_FORMAT_RGB_UINT16);
RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_UINT16);
break;
case GL_RGB32UI_EXT:
RETURN_IF_SUPPORTED(MESA_FORMAT_RGB_UINT32);
RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_UINT32);
break;
case GL_RGB8I_EXT:
RETURN_IF_SUPPORTED(MESA_FORMAT_RGB_INT8);
RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_INT8);
break;
case GL_RGB16I_EXT:
RETURN_IF_SUPPORTED(MESA_FORMAT_RGB_INT16);
RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_INT16);
break;
case GL_RGB32I_EXT:
RETURN_IF_SUPPORTED(MESA_FORMAT_RGB_INT32);
RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_INT32);
break;
case GL_RGBA8UI_EXT:
RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_UINT8);
break;
case GL_RGBA16UI_EXT:
RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_UINT16);
break;
case GL_RGBA32UI_EXT:
RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_UINT32);
break;
case GL_RGBA8I_EXT:
RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_INT8);
break;
case GL_RGBA16I_EXT:
RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_INT16);
break;
case GL_RGBA32I_EXT:
RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_INT32);
break;
}
}
if (ctx->Extensions.ARB_texture_rg) {
switch (internalFormat) {
case GL_R8:
case GL_RED:
RETURN_IF_SUPPORTED(MESA_FORMAT_R8);
break;
case GL_COMPRESSED_RED:
if (target != GL_TEXTURE_1D && target != GL_TEXTURE_1D_ARRAY)
RETURN_IF_SUPPORTED(MESA_FORMAT_RED_RGTC1);
RETURN_IF_SUPPORTED(MESA_FORMAT_R8);
break;
case GL_R16:
RETURN_IF_SUPPORTED(MESA_FORMAT_R16);
break;
case GL_RG:
case GL_RG8:
RETURN_IF_SUPPORTED(MESA_FORMAT_GR88);
break;
case GL_COMPRESSED_RG:
if (target != GL_TEXTURE_1D && target != GL_TEXTURE_1D_ARRAY)
RETURN_IF_SUPPORTED(MESA_FORMAT_RG_RGTC2);
RETURN_IF_SUPPORTED(MESA_FORMAT_GR88);
break;
case GL_RG16:
RETURN_IF_SUPPORTED(MESA_FORMAT_GR1616);
break;
default:
; /* fallthrough */
}
}
if (ctx->Extensions.ARB_texture_rg && ctx->Extensions.ARB_texture_float) {
switch (internalFormat) {
case GL_R16F:
RETURN_IF_SUPPORTED(MESA_FORMAT_R_FLOAT16);
RETURN_IF_SUPPORTED(MESA_FORMAT_RG_FLOAT16);
RETURN_IF_SUPPORTED(MESA_FORMAT_R_FLOAT32);
RETURN_IF_SUPPORTED(MESA_FORMAT_RG_FLOAT32);
RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FLOAT16);
RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FLOAT32);
break;
case GL_R32F:
RETURN_IF_SUPPORTED(MESA_FORMAT_R_FLOAT32);
RETURN_IF_SUPPORTED(MESA_FORMAT_RG_FLOAT32);
RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FLOAT32);
RETURN_IF_SUPPORTED(MESA_FORMAT_R_FLOAT16);
RETURN_IF_SUPPORTED(MESA_FORMAT_RG_FLOAT16);
RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FLOAT16);
break;
case GL_RG16F:
RETURN_IF_SUPPORTED(MESA_FORMAT_RG_FLOAT16);
RETURN_IF_SUPPORTED(MESA_FORMAT_RG_FLOAT32);
RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FLOAT16);
RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FLOAT32);
break;
case GL_RG32F:
RETURN_IF_SUPPORTED(MESA_FORMAT_RG_FLOAT32);
RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FLOAT32);
RETURN_IF_SUPPORTED(MESA_FORMAT_RG_FLOAT16);
RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FLOAT16);
break;
default:
; /* fallthrough */
}
}
if (ctx->Version >= 30 ||
(ctx->Extensions.ARB_texture_rg &&
ctx->Extensions.EXT_texture_integer)) {
switch (internalFormat) {
case GL_R8UI:
RETURN_IF_SUPPORTED(MESA_FORMAT_R_UINT8);
break;
case GL_RG8UI:
RETURN_IF_SUPPORTED(MESA_FORMAT_RG_UINT8);
break;
case GL_R16UI:
RETURN_IF_SUPPORTED(MESA_FORMAT_R_UINT16);
break;
case GL_RG16UI:
RETURN_IF_SUPPORTED(MESA_FORMAT_RG_UINT16);
break;
case GL_R32UI:
RETURN_IF_SUPPORTED(MESA_FORMAT_R_UINT32);
break;
case GL_RG32UI:
RETURN_IF_SUPPORTED(MESA_FORMAT_RG_UINT32);
break;
case GL_R8I:
RETURN_IF_SUPPORTED(MESA_FORMAT_R_INT8);
break;
case GL_RG8I:
RETURN_IF_SUPPORTED(MESA_FORMAT_RG_INT8);
break;
case GL_R16I:
RETURN_IF_SUPPORTED(MESA_FORMAT_R_INT16);
break;
case GL_RG16I:
RETURN_IF_SUPPORTED(MESA_FORMAT_RG_INT16);
break;
case GL_R32I:
RETURN_IF_SUPPORTED(MESA_FORMAT_R_INT32);
break;
case GL_RG32I:
RETURN_IF_SUPPORTED(MESA_FORMAT_RG_INT32);
break;
default:
break;
}
}
if (ctx->Extensions.ARB_texture_rgb10_a2ui) {
switch (internalFormat) {
case GL_RGB10_A2UI:
RETURN_IF_SUPPORTED(MESA_FORMAT_ARGB2101010_UINT);
RETURN_IF_SUPPORTED(MESA_FORMAT_ABGR2101010_UINT);
break;
default:
break;
}
}
/* GL_BGRA can be an internal format *only* in OpenGL ES (1.x or 2.0).
*/
if (_mesa_is_gles(ctx)) {
switch (internalFormat) {
case GL_BGRA:
RETURN_IF_SUPPORTED(MESA_FORMAT_ARGB8888);
break;
default:
; /* fallthrough */
}
}
_mesa_problem(ctx, "unexpected format %s in _mesa_choose_tex_format()",
_mesa_lookup_enum_by_nr(internalFormat));
return MESA_FORMAT_NONE;
}
static bool
compressed_format_compatible(const struct gl_context *ctx,
GLenum compressedFormat, GLenum otherFormat)
{
enum mesa_block_class compressedClass, otherClass;
/* Two view-incompatible compressed formats are never compatible. */
if (_mesa_is_compressed_format(ctx, otherFormat)) {
return false;
}
/*
* From ARB_copy_image spec:
* Table 4.X.1 (Compatible internal formats for copying between
* compressed and uncompressed internal formats)
* ---------------------------------------------------------------------
* | Texel / | Uncompressed | |
* | Block | internal format | Compressed internal format |
* | size | | |
* ---------------------------------------------------------------------
* | 128-bit | RGBA32UI, | COMPRESSED_RGBA_S3TC_DXT3_EXT, |
* | | RGBA32I, | COMPRESSED_SRGB_ALPHA_S3TC_DXT3_EXT,|
* | | RGBA32F | COMPRESSED_RGBA_S3TC_DXT5_EXT, |
* | | | COMPRESSED_SRGB_ALPHA_S3TC_DXT5_EXT,|
* | | | COMPRESSED_RG_RGTC2, |
* | | | COMPRESSED_SIGNED_RG_RGTC2, |
* | | | COMPRESSED_RGBA_BPTC_UNORM, |
* | | | COMPRESSED_SRGB_ALPHA_BPTC_UNORM, |
* | | | COMPRESSED_RGB_BPTC_SIGNED_FLOAT, |
* | | | COMPRESSED_RGB_BPTC_UNSIGNED_FLOAT |
* ---------------------------------------------------------------------
* | 64-bit | RGBA16F, RG32F, | COMPRESSED_RGB_S3TC_DXT1_EXT, |
* | | RGBA16UI, RG32UI, | COMPRESSED_SRGB_S3TC_DXT1_EXT, |
* | | RGBA16I, RG32I, | COMPRESSED_RGBA_S3TC_DXT1_EXT, |
* | | RGBA16, | COMPRESSED_SRGB_ALPHA_S3TC_DXT1_EXT,|
* | | RGBA16_SNORM | COMPRESSED_RED_RGTC1, |
* | | | COMPRESSED_SIGNED_RED_RGTC1 |
* ---------------------------------------------------------------------
*/
switch (compressedFormat) {
case GL_COMPRESSED_RGBA_S3TC_DXT3_EXT:
case GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT3_EXT:
case GL_COMPRESSED_RGBA_S3TC_DXT5_EXT:
case GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT5_EXT:
case GL_COMPRESSED_RG_RGTC2:
case GL_COMPRESSED_SIGNED_RG_RGTC2:
case GL_COMPRESSED_RGBA_BPTC_UNORM:
case GL_COMPRESSED_SRGB_ALPHA_BPTC_UNORM:
case GL_COMPRESSED_RGB_BPTC_SIGNED_FLOAT:
case GL_COMPRESSED_RGB_BPTC_UNSIGNED_FLOAT:
compressedClass = BLOCK_CLASS_128_BITS;
break;
case GL_COMPRESSED_RGB_S3TC_DXT1_EXT:
case GL_COMPRESSED_SRGB_S3TC_DXT1_EXT:
case GL_COMPRESSED_RGBA_S3TC_DXT1_EXT:
case GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT1_EXT:
case GL_COMPRESSED_RED_RGTC1:
case GL_COMPRESSED_SIGNED_RED_RGTC1:
compressedClass = BLOCK_CLASS_64_BITS;
break;
case GL_COMPRESSED_RGBA8_ETC2_EAC:
case GL_COMPRESSED_SRGB8_ALPHA8_ETC2_EAC:
case GL_COMPRESSED_RG11_EAC:
case GL_COMPRESSED_SIGNED_RG11_EAC:
if (_mesa_is_gles(ctx))
compressedClass = BLOCK_CLASS_128_BITS;
else
return false;
break;
case GL_COMPRESSED_RGB8_ETC2:
case GL_COMPRESSED_SRGB8_ETC2:
case GL_COMPRESSED_R11_EAC:
case GL_COMPRESSED_SIGNED_R11_EAC:
case GL_COMPRESSED_RGB8_PUNCHTHROUGH_ALPHA1_ETC2:
case GL_COMPRESSED_SRGB8_PUNCHTHROUGH_ALPHA1_ETC2:
if (_mesa_is_gles(ctx))
compressedClass = BLOCK_CLASS_64_BITS;
else
return false;
break;
default:
if (_mesa_is_gles(ctx) && _mesa_is_astc_format(compressedFormat))
compressedClass = BLOCK_CLASS_128_BITS;
else
return false;
break;
}
switch (otherFormat) {
case GL_RGBA32UI:
case GL_RGBA32I:
case GL_RGBA32F:
otherClass = BLOCK_CLASS_128_BITS;
break;
case GL_RGBA16F:
case GL_RG32F:
case GL_RGBA16UI:
case GL_RG32UI:
case GL_RGBA16I:
case GL_RG32I:
case GL_RGBA16:
case GL_RGBA16_SNORM:
otherClass = BLOCK_CLASS_64_BITS;
break;
default:
return false;
}
return compressedClass == otherClass;
}
