/**
* Compute/return the offset of the stencil value in a pixel.
* For example, if the format is Z24+S8, the position of the stencil bits
* within the 4-byte pixel will be either 0 or 3.
*/
static GLint
get_stencil_offset(gl_format format)
{
const GLubyte one = 1;
GLubyte pixel[MAX_PIXEL_BYTES];
GLint bpp = _mesa_get_format_bytes(format);
GLint i;
assert(_mesa_get_format_bits(format, GL_STENCIL_BITS) == 8);
memset(pixel, 0, sizeof(pixel));
_mesa_pack_ubyte_stencil_row(format, 1, &one, pixel);
for (i = 0; i < bpp; i++) {
if (pixel[i])
return i;
}
_mesa_problem(NULL, "get_stencil_offset() failed\n");
return 0;
}
/**
* Determine if we need to clear the combiend depth/stencil buffer by
* drawing a quad.
*/
static INLINE GLboolean
check_clear_depth_stencil_with_quad(struct gl_context *ctx, struct gl_renderbuffer *rb)
{
const GLuint stencilMax = 0xff;
GLboolean maskStencil
= (ctx->Stencil.WriteMask[0] & stencilMax) != stencilMax;
assert(_mesa_get_format_bits(rb->Format, GL_STENCIL_BITS) > 0);
if (ctx->Scissor.Enabled &&
(ctx->Scissor.X != 0 ||
ctx->Scissor.Y != 0 ||
ctx->Scissor.Width < rb->Width ||
ctx->Scissor.Height < rb->Height))
return GL_TRUE;
if (maskStencil)
return GL_TRUE;
return GL_FALSE;
}
/* common formats supported as both textures and render targets */
unsigned r200_check_blit(gl_format mesa_format)
{
/* XXX others? BE/LE? */
switch (mesa_format) {
case MESA_FORMAT_ARGB8888:
case MESA_FORMAT_XRGB8888:
case MESA_FORMAT_RGB565:
case MESA_FORMAT_ARGB4444:
case MESA_FORMAT_ARGB1555:
case MESA_FORMAT_A8:
break;
default:
return 0;
}
/* ??? */
if (_mesa_get_format_bits(mesa_format, GL_DEPTH_BITS) > 0)
return 0;
return 1;
}
void untile_image(const void * src, unsigned src_pitch,
void *dst, unsigned dst_pitch,
gl_format format, unsigned width, unsigned height)
{
assert(src_pitch >= width);
assert(dst_pitch >= width);
radeon_print(RADEON_TEXTURE, RADEON_TRACE,
"Software untiling: src_pitch %d, dst_pitch %d, width %d, height %d, bpp %d\n",
src_pitch, dst_pitch, width, height, _mesa_get_format_bytes(format));
switch (_mesa_get_format_bytes(format))
{
case 16:
micro_untile_1_x_1_128bit(src, src_pitch, dst, dst_pitch, width, height);
break;
case 8:
micro_untile_2_x_2_64bit(src, src_pitch, dst, dst_pitch, width, height);
break;
case 4:
micro_untile_4_x_2_32bit(src, src_pitch, dst, dst_pitch, width, height);
break;
case 2:
if (_mesa_get_format_bits(format, GL_DEPTH_BITS))
{
micro_untile_4_x_4_16bit(src, src_pitch, dst, dst_pitch, width, height);
}
else
{
micro_untile_8_x_2_16bit(src, src_pitch, dst, dst_pitch, width, height);
}
break;
case 1:
micro_untile_8_x_4_8bit(src, src_pitch, dst, dst_pitch, width, height);
break;
default:
assert(0);
break;
}
}
void get_tile_size(gl_format format, unsigned *block_width, unsigned *block_height)
{
switch (_mesa_get_format_bytes(format))
{
case 16:
*block_width = 1;
*block_height = 1;
break;
case 8:
*block_width = 2;
*block_height = 2;
break;
case 4:
*block_width = 4;
*block_height = 2;
break;
case 2:
if (_mesa_get_format_bits(format, GL_DEPTH_BITS))
{
*block_width = 4;
*block_height = 4;
}
else
{
*block_width = 8;
*block_height = 2;
}
break;
case 1:
*block_width = 8;
*block_height = 4;
break;
default:
assert(0);
break;
}
}
/**
* Check if the renderbuffer for a read/draw operation exists.
* \param format a basic image format such as GL_RGB, GL_RGBA, GL_ALPHA,
* GL_DEPTH_COMPONENT, etc. or GL_COLOR, GL_DEPTH, GL_STENCIL.
* \param reading if TRUE, we're going to read from the buffer,
if FALSE, we're going to write to the buffer.
* \return GL_TRUE if buffer exists, GL_FALSE otherwise
*/
static GLboolean
renderbuffer_exists(struct gl_context *ctx,
struct gl_framebuffer *fb,
GLenum format,
GLboolean reading)
{
const struct gl_renderbuffer_attachment *att = fb->Attachment;
/* If we don't know the framebuffer status, update it now */
if (fb->_Status == 0) {
_mesa_test_framebuffer_completeness(ctx, fb);
}
if (fb->_Status != GL_FRAMEBUFFER_COMPLETE_EXT) {
return GL_FALSE;
}
switch (format) {
case GL_COLOR:
case GL_RED:
case GL_GREEN:
case GL_BLUE:
case GL_ALPHA:
case GL_LUMINANCE:
case GL_LUMINANCE_ALPHA:
case GL_INTENSITY:
case GL_RG:
case GL_RGB:
case GL_BGR:
case GL_RGBA:
case GL_BGRA:
case GL_ABGR_EXT:
case GL_RED_INTEGER_EXT:
case GL_RG_INTEGER:
case GL_GREEN_INTEGER_EXT:
case GL_BLUE_INTEGER_EXT:
case GL_ALPHA_INTEGER_EXT:
case GL_RGB_INTEGER_EXT:
case GL_RGBA_INTEGER_EXT:
case GL_BGR_INTEGER_EXT:
case GL_BGRA_INTEGER_EXT:
case GL_LUMINANCE_INTEGER_EXT:
case GL_LUMINANCE_ALPHA_INTEGER_EXT:
if (reading) {
/* about to read from a color buffer */
const struct gl_renderbuffer *readBuf = fb->_ColorReadBuffer;
if (!readBuf) {
return GL_FALSE;
}
assert(_mesa_get_format_bits(readBuf->Format, GL_RED_BITS) > 0 ||
_mesa_get_format_bits(readBuf->Format, GL_ALPHA_BITS) > 0 ||
_mesa_get_format_bits(readBuf->Format, GL_TEXTURE_LUMINANCE_SIZE) > 0 ||
_mesa_get_format_bits(readBuf->Format, GL_TEXTURE_INTENSITY_SIZE) > 0 ||
_mesa_get_format_bits(readBuf->Format, GL_INDEX_BITS) > 0);
}
else {
/* about to draw to zero or more color buffers (none is OK) */
return GL_TRUE;
}
break;
case GL_DEPTH:
case GL_DEPTH_COMPONENT:
if (att[BUFFER_DEPTH].Type == GL_NONE) {
return GL_FALSE;
}
break;
case GL_STENCIL:
case GL_STENCIL_INDEX:
if (att[BUFFER_STENCIL].Type == GL_NONE) {
return GL_FALSE;
}
break;
case GL_DEPTH_STENCIL_EXT:
if (att[BUFFER_DEPTH].Type == GL_NONE ||
att[BUFFER_STENCIL].Type == GL_NONE) {
return GL_FALSE;
}
break;
default:
_mesa_problem(ctx,
"Unexpected format 0x%x in renderbuffer_exists",
format);
return GL_FALSE;
}
/* OK */
return GL_TRUE;
}
/**
* The glGet queries of the framebuffer red/green/blue size, stencil size,
* etc. are satisfied by the fields of ctx->DrawBuffer->Visual. These can
* change depending on the renderbuffer bindings. This function updates
* the given framebuffer's Visual from the current renderbuffer bindings.
*
* This may apply to user-created framebuffers or window system framebuffers.
*
* Also note: ctx->DrawBuffer->Visual.depthBits might not equal
* ctx->DrawBuffer->Attachment[BUFFER_DEPTH].Renderbuffer.DepthBits.
* The former one is used to convert floating point depth values into
* integer Z values.
*/
void
_mesa_update_framebuffer_visual(struct gl_context *ctx,
struct gl_framebuffer *fb)
{
GLuint i;
memset(&fb->Visual, 0, sizeof(fb->Visual));
fb->Visual.rgbMode = GL_TRUE; /* assume this */
/* find first RGB renderbuffer */
for (i = 0; i < BUFFER_COUNT; i++) {
if (fb->Attachment[i].Renderbuffer) {
const struct gl_renderbuffer *rb = fb->Attachment[i].Renderbuffer;
const GLenum baseFormat = _mesa_get_format_base_format(rb->Format);
const mesa_format fmt = rb->Format;
/* Grab samples and sampleBuffers from any attachment point (assuming
* the framebuffer is complete, we'll get the same answer from all
* attachments).
*/
fb->Visual.samples = rb->NumSamples;
fb->Visual.sampleBuffers = rb->NumSamples > 0 ? 1 : 0;
if (_mesa_is_legal_color_format(ctx, baseFormat)) {
fb->Visual.redBits = _mesa_get_format_bits(fmt, GL_RED_BITS);
fb->Visual.greenBits = _mesa_get_format_bits(fmt, GL_GREEN_BITS);
fb->Visual.blueBits = _mesa_get_format_bits(fmt, GL_BLUE_BITS);
fb->Visual.alphaBits = _mesa_get_format_bits(fmt, GL_ALPHA_BITS);
fb->Visual.rgbBits = fb->Visual.redBits
+ fb->Visual.greenBits + fb->Visual.blueBits;
if (_mesa_get_format_color_encoding(fmt) == GL_SRGB)
fb->Visual.sRGBCapable = ctx->Extensions.EXT_framebuffer_sRGB;
break;
}
}
}
fb->Visual.floatMode = GL_FALSE;
for (i = 0; i < BUFFER_COUNT; i++) {
if (fb->Attachment[i].Renderbuffer) {
const struct gl_renderbuffer *rb = fb->Attachment[i].Renderbuffer;
const mesa_format fmt = rb->Format;
if (_mesa_get_format_datatype(fmt) == GL_FLOAT) {
fb->Visual.floatMode = GL_TRUE;
break;
}
}
}
if (fb->Attachment[BUFFER_DEPTH].Renderbuffer) {
const struct gl_renderbuffer *rb =
fb->Attachment[BUFFER_DEPTH].Renderbuffer;
const mesa_format fmt = rb->Format;
fb->Visual.haveDepthBuffer = GL_TRUE;
fb->Visual.depthBits = _mesa_get_format_bits(fmt, GL_DEPTH_BITS);
}
if (fb->Attachment[BUFFER_STENCIL].Renderbuffer) {
const struct gl_renderbuffer *rb =
fb->Attachment[BUFFER_STENCIL].Renderbuffer;
const mesa_format fmt = rb->Format;
fb->Visual.haveStencilBuffer = GL_TRUE;
fb->Visual.stencilBits = _mesa_get_format_bits(fmt, GL_STENCIL_BITS);
}
if (fb->Attachment[BUFFER_ACCUM].Renderbuffer) {
const struct gl_renderbuffer *rb =
fb->Attachment[BUFFER_ACCUM].Renderbuffer;
const mesa_format fmt = rb->Format;
fb->Visual.haveAccumBuffer = GL_TRUE;
fb->Visual.accumRedBits = _mesa_get_format_bits(fmt, GL_RED_BITS);
fb->Visual.accumGreenBits = _mesa_get_format_bits(fmt, GL_GREEN_BITS);
fb->Visual.accumBlueBits = _mesa_get_format_bits(fmt, GL_BLUE_BITS);
fb->Visual.accumAlphaBits = _mesa_get_format_bits(fmt, GL_ALPHA_BITS);
}
compute_depth_max(fb);
}
void GLAPIENTRY
_mesa_GetTexLevelParameteriv( GLenum target, GLint level,
GLenum pname, GLint *params )
{
struct gl_texture_object *texObj;
const struct gl_texture_image *img = NULL;
GLint maxLevels;
gl_format texFormat;
GET_CURRENT_CONTEXT(ctx);
ASSERT_OUTSIDE_BEGIN_END(ctx);
/* this will catch bad target values */
maxLevels = _mesa_max_texture_levels(ctx, target);
if (maxLevels == 0) {
_mesa_error(ctx, GL_INVALID_ENUM,
"glGetTexLevelParameter[if]v(target=0x%x)", target);
return;
}
if (level < 0 || level >= maxLevels) {
_mesa_error( ctx, GL_INVALID_VALUE, "glGetTexLevelParameter[if]v" );
return;
}
texObj = _mesa_select_tex_object(ctx, target);
img = _mesa_select_tex_image(ctx, texObj, target, level);
if (!img || img->TexFormat == MESA_FORMAT_NONE) {
/* undefined texture image */
if (pname == GL_TEXTURE_COMPONENTS)
*params = 1;
else
*params = 0;
return;
}
texFormat = img->TexFormat;
switch (pname) {
case GL_TEXTURE_WIDTH:
*params = img->Width;
break;
case GL_TEXTURE_HEIGHT:
*params = img->Height;
break;
case GL_TEXTURE_DEPTH:
*params = img->Depth;
break;
case GL_TEXTURE_INTERNAL_FORMAT:
*params = img->InternalFormat;
break;
case GL_TEXTURE_BORDER:
*params = img->Border;
break;
case GL_TEXTURE_RED_SIZE:
case GL_TEXTURE_GREEN_SIZE:
case GL_TEXTURE_BLUE_SIZE:
case GL_TEXTURE_ALPHA_SIZE:
if (_mesa_base_format_has_channel(img->_BaseFormat, pname))
*params = _mesa_get_format_bits(texFormat, pname);
else
*params = 0;
break;
case GL_TEXTURE_INTENSITY_SIZE:
case GL_TEXTURE_LUMINANCE_SIZE:
if (_mesa_base_format_has_channel(img->_BaseFormat, pname)) {
*params = _mesa_get_format_bits(texFormat, pname);
if (*params == 0) {
/* intensity or luminance is probably stored as RGB[A] */
*params = MIN2(_mesa_get_format_bits(texFormat,
GL_TEXTURE_RED_SIZE),
_mesa_get_format_bits(texFormat,
GL_TEXTURE_GREEN_SIZE));
}
}
else {
*params = 0;
}
break;
/* GL_ARB_texture_float */
case GL_TEXTURE_RED_TYPE_ARB:
case GL_TEXTURE_GREEN_TYPE_ARB:
case GL_TEXTURE_BLUE_TYPE_ARB:
case GL_TEXTURE_ALPHA_TYPE_ARB:
case GL_TEXTURE_LUMINANCE_TYPE_ARB:
case GL_TEXTURE_INTENSITY_TYPE_ARB:
case GL_TEXTURE_DEPTH_TYPE_ARB:
if (!ctx->Extensions.ARB_texture_float)
goto invalid_pname;
if (_mesa_base_format_has_channel(img->_BaseFormat, pname))
*params = _mesa_get_format_datatype(texFormat);
else
*params = GL_NONE;
break;
default:
goto invalid_pname;
}
/* no error if we get here */
return;
invalid_pname:
_mesa_error(ctx, GL_INVALID_ENUM,
"glGetTexLevelParameter[if]v(pname=%s)",
_mesa_lookup_enum_by_nr(pname));
}
void GLAPIENTRY
_mesa_GetTexLevelParameteriv( GLenum target, GLint level,
GLenum pname, GLint *params )
{
const struct gl_texture_unit *texUnit;
struct gl_texture_object *texObj;
const struct gl_texture_image *img = NULL;
GLint maxLevels;
gl_format texFormat;
GET_CURRENT_CONTEXT(ctx);
ASSERT_OUTSIDE_BEGIN_END(ctx);
if (ctx->Texture.CurrentUnit >= ctx->Const.MaxCombinedTextureImageUnits) {
_mesa_error(ctx, GL_INVALID_OPERATION,
"glGetTexLevelParameteriv(current unit)");
return;
}
texUnit = _mesa_get_current_tex_unit(ctx);
/* this will catch bad target values */
maxLevels = _mesa_max_texture_levels(ctx, target);
if (maxLevels == 0) {
_mesa_error(ctx, GL_INVALID_ENUM,
"glGetTexLevelParameter[if]v(target=0x%x)", target);
return;
}
if (level < 0 || level >= maxLevels) {
_mesa_error( ctx, GL_INVALID_VALUE, "glGetTexLevelParameter[if]v" );
return;
}
texObj = _mesa_select_tex_object(ctx, texUnit, target);
img = _mesa_select_tex_image(ctx, texObj, target, level);
if (!img || !img->TexFormat) {
/* undefined texture image */
if (pname == GL_TEXTURE_COMPONENTS)
*params = 1;
else
*params = 0;
return;
}
texFormat = img->TexFormat;
switch (pname) {
case GL_TEXTURE_WIDTH:
*params = img->Width;
break;
case GL_TEXTURE_HEIGHT:
*params = img->Height;
break;
case GL_TEXTURE_DEPTH:
*params = img->Depth;
break;
case GL_TEXTURE_INTERNAL_FORMAT:
if (_mesa_is_format_compressed(texFormat)) {
/* need to return the actual compressed format */
*params = _mesa_compressed_format_to_glenum(ctx, texFormat);
}
else {
/* If the true internal format is not compressed but the user
* requested a generic compressed format, we have to return the
* generic base format that matches.
*
* From page 119 (page 129 of the PDF) of the OpenGL 1.3 spec:
*
* "If no specific compressed format is available,
* internalformat is instead replaced by the corresponding base
* internal format."
*
* Otherwise just return the user's requested internal format
*/
const GLenum f =
_mesa_gl_compressed_format_base_format(img->InternalFormat);
*params = (f != 0) ? f : img->InternalFormat;
}
break;
case GL_TEXTURE_BORDER:
*params = img->Border;
break;
case GL_TEXTURE_RED_SIZE:
if (img->_BaseFormat == GL_RED) {
*params = _mesa_get_format_bits(texFormat, pname);
break;
}
/* FALLTHROUGH */
case GL_TEXTURE_GREEN_SIZE:
if (img->_BaseFormat == GL_RG) {
*params = _mesa_get_format_bits(texFormat, pname);
break;
}
/* FALLTHROUGH */
case GL_TEXTURE_BLUE_SIZE:
if (img->_BaseFormat == GL_RGB || img->_BaseFormat == GL_RGBA)
*params = _mesa_get_format_bits(texFormat, pname);
else
*params = 0;
break;
case GL_TEXTURE_ALPHA_SIZE:
if (img->_BaseFormat == GL_ALPHA ||
img->_BaseFormat == GL_LUMINANCE_ALPHA ||
img->_BaseFormat == GL_RGBA)
*params = _mesa_get_format_bits(texFormat, pname);
else
*params = 0;
break;
case GL_TEXTURE_INTENSITY_SIZE:
if (img->_BaseFormat != GL_INTENSITY)
*params = 0;
else {
*params = _mesa_get_format_bits(texFormat, pname);
if (*params == 0) {
/* intensity probably stored as rgb texture */
*params = MIN2(_mesa_get_format_bits(texFormat, GL_TEXTURE_RED_SIZE),
_mesa_get_format_bits(texFormat, GL_TEXTURE_GREEN_SIZE));
}
}
break;
case GL_TEXTURE_LUMINANCE_SIZE:
if (img->_BaseFormat != GL_LUMINANCE &&
img->_BaseFormat != GL_LUMINANCE_ALPHA)
*params = 0;
else {
*params = _mesa_get_format_bits(texFormat, pname);
if (*params == 0) {
/* luminance probably stored as rgb texture */
*params = MIN2(_mesa_get_format_bits(texFormat, GL_TEXTURE_RED_SIZE),
_mesa_get_format_bits(texFormat, GL_TEXTURE_GREEN_SIZE));
}
}
break;
case GL_TEXTURE_INDEX_SIZE_EXT:
if (img->_BaseFormat == GL_COLOR_INDEX)
*params = _mesa_get_format_bits(texFormat, pname);
else
*params = 0;
break;
case GL_TEXTURE_DEPTH_SIZE_ARB:
if (ctx->Extensions.ARB_depth_texture)
*params = _mesa_get_format_bits(texFormat, pname);
else
goto invalid_pname;
break;
case GL_TEXTURE_STENCIL_SIZE_EXT:
if (ctx->Extensions.EXT_packed_depth_stencil ||
ctx->Extensions.ARB_framebuffer_object) {
*params = _mesa_get_format_bits(texFormat, pname);
}
else {
goto invalid_pname;
}
break;
case GL_TEXTURE_SHARED_SIZE:
if (ctx->VersionMajor >= 3 ||
ctx->Extensions.EXT_texture_shared_exponent) {
*params = texFormat == MESA_FORMAT_RGB9_E5_FLOAT ? 5 : 0;
}
else {
goto invalid_pname;
}
break;
/* GL_ARB_texture_compression */
case GL_TEXTURE_COMPRESSED_IMAGE_SIZE:
if (_mesa_is_format_compressed(texFormat) &&
!_mesa_is_proxy_texture(target)) {
*params = _mesa_format_image_size(texFormat, img->Width,
img->Height, img->Depth);
}
else {
_mesa_error(ctx, GL_INVALID_OPERATION,
"glGetTexLevelParameter[if]v(pname)");
}
break;
case GL_TEXTURE_COMPRESSED:
*params = (GLint) _mesa_is_format_compressed(texFormat);
break;
/* GL_ARB_texture_float */
case GL_TEXTURE_RED_TYPE_ARB:
if (ctx->Extensions.ARB_texture_float) {
*params = _mesa_get_format_bits(texFormat, GL_TEXTURE_RED_SIZE) ?
_mesa_get_format_datatype(texFormat) : GL_NONE;
}
else {
goto invalid_pname;
}
break;
case GL_TEXTURE_GREEN_TYPE_ARB:
if (ctx->Extensions.ARB_texture_float) {
*params = _mesa_get_format_bits(texFormat, GL_TEXTURE_GREEN_SIZE) ?
_mesa_get_format_datatype(texFormat) : GL_NONE;
}
else {
goto invalid_pname;
}
break;
case GL_TEXTURE_BLUE_TYPE_ARB:
if (ctx->Extensions.ARB_texture_float) {
*params = _mesa_get_format_bits(texFormat, GL_TEXTURE_BLUE_SIZE) ?
_mesa_get_format_datatype(texFormat) : GL_NONE;
}
else {
goto invalid_pname;
}
break;
case GL_TEXTURE_ALPHA_TYPE_ARB:
if (ctx->Extensions.ARB_texture_float) {
*params = _mesa_get_format_bits(texFormat, GL_TEXTURE_ALPHA_SIZE) ?
_mesa_get_format_datatype(texFormat) : GL_NONE;
}
else {
goto invalid_pname;
}
break;
case GL_TEXTURE_LUMINANCE_TYPE_ARB:
if (ctx->Extensions.ARB_texture_float) {
*params = _mesa_get_format_bits(texFormat, GL_TEXTURE_LUMINANCE_SIZE) ?
_mesa_get_format_datatype(texFormat) : GL_NONE;
}
else {
goto invalid_pname;
}
break;
case GL_TEXTURE_INTENSITY_TYPE_ARB:
if (ctx->Extensions.ARB_texture_float) {
*params = _mesa_get_format_bits(texFormat, GL_TEXTURE_INTENSITY_SIZE) ?
_mesa_get_format_datatype(texFormat) : GL_NONE;
}
else {
goto invalid_pname;
}
break;
case GL_TEXTURE_DEPTH_TYPE_ARB:
if (ctx->Extensions.ARB_texture_float) {
*params = _mesa_get_format_bits(texFormat, GL_TEXTURE_DEPTH_SIZE) ?
_mesa_get_format_datatype(texFormat) : GL_NONE;
}
else {
goto invalid_pname;
}
break;
default:
goto invalid_pname;
}
/* no error if we get here */
return;
invalid_pname:
_mesa_error(ctx, GL_INVALID_ENUM,
"glGetTexLevelParameter[if]v(pname=%s)",
_mesa_lookup_enum_by_nr(pname));
}
static GLboolean
do_copy_texsubimage(GLcontext *ctx,
GLenum target, GLint level,
struct radeon_tex_obj *tobj,
radeon_texture_image *timg,
GLint dstx, GLint dsty,
GLint x, GLint y,
GLsizei width, GLsizei height)
{
radeonContextPtr radeon = RADEON_CONTEXT(ctx);
struct radeon_renderbuffer *rrb;
unsigned src_bpp;
unsigned dst_bpp;
gl_format src_mesaformat;
gl_format dst_mesaformat;
unsigned src_width;
unsigned dst_width;
unsigned flip_y;
if (!radeon->vtbl.blit) {
return GL_FALSE;
}
if (_mesa_get_format_bits(timg->base.TexFormat, GL_DEPTH_BITS) > 0) {
if (ctx->ReadBuffer->_DepthBuffer && ctx->ReadBuffer->_DepthBuffer->Wrapped) {
rrb = radeon_renderbuffer(ctx->ReadBuffer->_DepthBuffer->Wrapped);
} else {
rrb = radeon_renderbuffer(ctx->ReadBuffer->_DepthBuffer);
}
flip_y = ctx->ReadBuffer->Attachment[BUFFER_DEPTH].Type == GL_NONE;
} else {
rrb = radeon_renderbuffer(ctx->ReadBuffer->_ColorReadBuffer);
flip_y = ctx->ReadBuffer->Attachment[BUFFER_COLOR0].Type == GL_NONE;
}
// This is software renderbuffer, fallback to swrast
if (!rrb) {
return GL_FALSE;
}
if (!timg->mt) {
radeon_validate_texture_miptree(ctx, &tobj->base);
}
assert(rrb->bo);
assert(timg->mt);
assert(timg->mt->bo);
assert(timg->base.Width >= dstx + width);
assert(timg->base.Height >= dsty + height);
intptr_t src_offset = rrb->draw_offset;
intptr_t dst_offset = radeon_miptree_image_offset(timg->mt, _mesa_tex_target_to_face(target), level);
if (0) {
fprintf(stderr, "%s: copying to face %d, level %d\n",
__FUNCTION__, _mesa_tex_target_to_face(target), level);
fprintf(stderr, "to: x %d, y %d, offset %d\n", dstx, dsty, (uint32_t) dst_offset);
fprintf(stderr, "from (%dx%d) width %d, height %d, offset %d, pitch %d\n",
x, y, rrb->base.Width, rrb->base.Height, (uint32_t) src_offset, rrb->pitch/rrb->cpp);
fprintf(stderr, "src size %d, dst size %d\n", rrb->bo->size, timg->mt->bo->size);
}
src_mesaformat = rrb->base.Format;
dst_mesaformat = timg->base.TexFormat;
src_width = rrb->base.Width;
dst_width = timg->base.Width;
src_bpp = _mesa_get_format_bytes(src_mesaformat);
dst_bpp = _mesa_get_format_bytes(dst_mesaformat);
if (!radeon->vtbl.check_blit(dst_mesaformat)) {
/* depth formats tend to be special */
if (_mesa_get_format_bits(dst_mesaformat, GL_DEPTH_BITS) > 0)
return GL_FALSE;
if (src_bpp != dst_bpp)
return GL_FALSE;
switch (dst_bpp) {
case 2:
src_mesaformat = MESA_FORMAT_RGB565;
dst_mesaformat = MESA_FORMAT_RGB565;
break;
case 4:
src_mesaformat = MESA_FORMAT_ARGB8888;
dst_mesaformat = MESA_FORMAT_ARGB8888;
break;
case 1:
src_mesaformat = MESA_FORMAT_A8;
dst_mesaformat = MESA_FORMAT_A8;
break;
default:
return GL_FALSE;
}
}
/* blit from src buffer to texture */
return radeon->vtbl.blit(ctx, rrb->bo, src_offset, src_mesaformat, rrb->pitch/rrb->cpp,
src_width, rrb->base.Height, x, y,
timg->mt->bo, dst_offset, dst_mesaformat,
timg->mt->levels[level].rowstride / dst_bpp,
dst_width, timg->base.Height,
dstx, dsty, width, height, flip_y);
}
void GLAPIENTRY
_mesa_GetInternalformativ(GLenum target, GLenum internalformat, GLenum pname,
GLsizei bufSize, GLint *params)
{
GLint buffer[16];
GET_CURRENT_CONTEXT(ctx);
ASSERT_OUTSIDE_BEGIN_END(ctx);
/* ARB_internalformat_query is also mandatory for ARB_internalformat_query2 */
if (!(_mesa_has_ARB_internalformat_query(ctx) ||
_mesa_is_gles3(ctx))) {
_mesa_error(ctx, GL_INVALID_OPERATION, "glGetInternalformativ");
return;
}
assert(ctx->Driver.QueryInternalFormat != NULL);
if (!_legal_parameters(ctx, target, internalformat, pname, bufSize, params))
return;
/* initialize the contents of the temporary buffer */
memcpy(buffer, params, MIN2(bufSize, 16) * sizeof(GLint));
/* Use the 'unsupported' response defined by the spec for every pname
* as the default answer.
*/
_set_default_response(pname, buffer);
if (!_is_target_supported(ctx, target) ||
!_is_internalformat_supported(ctx, target, internalformat) ||
!_is_resource_supported(ctx, target, internalformat, pname))
goto end;
switch (pname) {
case GL_SAMPLES:
/* fall-through */
case GL_NUM_SAMPLE_COUNTS:
/* The ARB_internalformat_query2 sets the response as 'unsupported' for
* SAMPLES and NUM_SAMPLE_COUNTS:
*
* "If <internalformat> is not color-renderable, depth-renderable, or
* stencil-renderable (as defined in section 4.4.4), or if <target>
* does not support multiple samples (ie other than
* TEXTURE_2D_MULTISAMPLE, TEXTURE_2D_MULTISAMPLE_ARRAY,
* or RENDERBUFFER)."
*/
if ((target != GL_RENDERBUFFER &&
target != GL_TEXTURE_2D_MULTISAMPLE &&
target != GL_TEXTURE_2D_MULTISAMPLE_ARRAY) ||
!_is_renderable(ctx, internalformat))
goto end;
/* The GL ES 3.0 specification, section 6.1.15 page 236 says:
*
* "Since multisampling is not supported for signed and unsigned
* integer internal formats, the value of NUM_SAMPLE_COUNTS will be
* zero for such formats.
*
* Since OpenGL ES 3.1 adds support for multisampled integer formats, we
* have to check the version for 30 exactly.
*/
if (pname == GL_NUM_SAMPLE_COUNTS && ctx->API == API_OPENGLES2 &&
ctx->Version == 30 && _mesa_is_enum_format_integer(internalformat)) {
goto end;
}
ctx->Driver.QueryInternalFormat(ctx, target, internalformat, pname,
buffer);
break;
case GL_INTERNALFORMAT_SUPPORTED:
/* Having a supported <internalformat> is implemented as a prerequisite
* for all the <pnames>. Thus, if we reach this point, the internalformat is
* supported.
*/
buffer[0] = GL_TRUE;
break;
case GL_INTERNALFORMAT_PREFERRED:
/* The ARB_internalformat_query2 spec says:
*
* "- INTERNALFORMAT_PREFERRED: The implementation-preferred internal
* format for representing resources of the specified <internalformat> is
* returned in <params>.
*
* Therefore, we let the driver answer. Note that if we reach this
* point, it means that the internalformat is supported, so the driver
* is called just to try to get a preferred format. If not supported,
* GL_NONE was already returned and the driver is not called.
*/
ctx->Driver.QueryInternalFormat(ctx, target, internalformat, pname,
buffer);
break;
case GL_INTERNALFORMAT_RED_SIZE:
case GL_INTERNALFORMAT_GREEN_SIZE:
case GL_INTERNALFORMAT_BLUE_SIZE:
case GL_INTERNALFORMAT_ALPHA_SIZE:
case GL_INTERNALFORMAT_DEPTH_SIZE:
case GL_INTERNALFORMAT_STENCIL_SIZE:
case GL_INTERNALFORMAT_SHARED_SIZE:
case GL_INTERNALFORMAT_RED_TYPE:
case GL_INTERNALFORMAT_GREEN_TYPE:
case GL_INTERNALFORMAT_BLUE_TYPE:
case GL_INTERNALFORMAT_ALPHA_TYPE:
case GL_INTERNALFORMAT_DEPTH_TYPE:
case GL_INTERNALFORMAT_STENCIL_TYPE: {
GLint baseformat;
mesa_format texformat;
if (target != GL_RENDERBUFFER) {
if (!_mesa_legal_get_tex_level_parameter_target(ctx, target, true))
goto end;
baseformat = _mesa_base_tex_format(ctx, internalformat);
} else {
baseformat = _mesa_base_fbo_format(ctx, internalformat);
}
/* Let the driver choose the texture format.
*
* Disclaimer: I am considering that drivers use for renderbuffers the
* same format-choice logic as for textures.
*/
texformat = ctx->Driver.ChooseTextureFormat(ctx, target, internalformat,
GL_NONE /*format */, GL_NONE /* type */);
if (texformat == MESA_FORMAT_NONE || baseformat <= 0)
goto end;
/* Implementation based on what Mesa does for glGetTexLevelParameteriv
* and glGetRenderbufferParameteriv functions.
*/
if (pname == GL_INTERNALFORMAT_SHARED_SIZE) {
if (_mesa_has_EXT_texture_shared_exponent(ctx) &&
target != GL_TEXTURE_BUFFER &&
target != GL_RENDERBUFFER &&
texformat == MESA_FORMAT_R9G9B9E5_FLOAT) {
buffer[0] = 5;
}
goto end;
}
if (!_mesa_base_format_has_channel(baseformat, pname))
goto end;
switch (pname) {
case GL_INTERNALFORMAT_DEPTH_SIZE:
if (ctx->API != API_OPENGL_CORE &&
!_mesa_has_ARB_depth_texture(ctx) &&
target != GL_RENDERBUFFER &&
target != GL_TEXTURE_BUFFER)
goto end;
/* fallthrough */
case GL_INTERNALFORMAT_RED_SIZE:
case GL_INTERNALFORMAT_GREEN_SIZE:
case GL_INTERNALFORMAT_BLUE_SIZE:
case GL_INTERNALFORMAT_ALPHA_SIZE:
case GL_INTERNALFORMAT_STENCIL_SIZE:
buffer[0] = _mesa_get_format_bits(texformat, pname);
break;
case GL_INTERNALFORMAT_DEPTH_TYPE:
if (!_mesa_has_ARB_texture_float(ctx))
goto end;
/* fallthrough */
case GL_INTERNALFORMAT_RED_TYPE:
case GL_INTERNALFORMAT_GREEN_TYPE:
case GL_INTERNALFORMAT_BLUE_TYPE:
case GL_INTERNALFORMAT_ALPHA_TYPE:
case GL_INTERNALFORMAT_STENCIL_TYPE:
buffer[0] = _mesa_get_format_datatype(texformat);
break;
default:
break;
}
break;
}
/* For WIDTH/HEIGHT/DEPTH/LAYERS there is no reason to think that the
* returned values should be different to the values returned by
* GetInteger with MAX_TEXTURE_SIZE, MAX_3D_TEXTURE_SIZE, etc.*/
case GL_MAX_WIDTH:
case GL_MAX_HEIGHT:
case GL_MAX_DEPTH: {
GLenum get_pname;
GLint dimensions;
GLint min_dimensions;
/* From query2:MAX_HEIGHT spec (as example):
*
* "If the resource does not have at least two dimensions, or if the
* resource is unsupported, zero is returned."
*/
dimensions = _get_target_dimensions(target);
min_dimensions = _get_min_dimensions(pname);
if (dimensions < min_dimensions)
goto end;
get_pname = _equivalent_size_pname(target, pname);
if (get_pname == 0)
goto end;
_mesa_GetIntegerv(get_pname, buffer);
break;
}
case GL_MAX_LAYERS:
if (!_mesa_has_EXT_texture_array(ctx))
goto end;
if (!_mesa_is_array_texture(target))
goto end;
_mesa_GetIntegerv(GL_MAX_ARRAY_TEXTURE_LAYERS, buffer);
break;
case GL_MAX_COMBINED_DIMENSIONS:{
GLint64 combined_value = 1;
GLenum max_dimensions_pnames[] = {
GL_MAX_WIDTH,
GL_MAX_HEIGHT,
GL_MAX_DEPTH,
GL_SAMPLES
};
unsigned i;
GLint current_value;
/* Combining the dimensions. Note that for array targets, this would
* automatically include the value of MAX_LAYERS, as that value is
* returned as MAX_HEIGHT or MAX_DEPTH */
for (i = 0; i < 4; i++) {
if (max_dimensions_pnames[i] == GL_SAMPLES &&
!_is_multisample_target(target))
continue;
_mesa_GetInternalformativ(target, internalformat,
max_dimensions_pnames[i],
1, ¤t_value);
if (current_value != 0)
combined_value *= current_value;
}
if (_mesa_is_cube_map_texture(target))
combined_value *= 6;
/* We pack the 64-bit value on two 32-bit values. Calling the 32-bit
* query, this would work as far as the value can be hold on a 32-bit
* signed integer. For the 64-bit query, the wrapper around the 32-bit
* query will unpack the value */
memcpy(buffer, &combined_value, sizeof(GLint64));
break;
}
case GL_COLOR_COMPONENTS:
/* The ARB_internalformat_query2 spec says:
*
* "- COLOR_COMPONENTS: If the internal format contains any color
* components (R, G, B, or A), TRUE is returned in <params>.
* If the internal format is unsupported or contains no color
* components, FALSE is returned."
*/
if (_mesa_is_color_format(internalformat))
buffer[0] = GL_TRUE;
break;
case GL_DEPTH_COMPONENTS:
/* The ARB_internalformat_query2 spec says:
*
* "- DEPTH_COMPONENTS: If the internal format contains a depth
* component (D), TRUE is returned in <params>. If the internal format
* is unsupported or contains no depth component, FALSE is returned."
*/
if (_mesa_is_depth_format(internalformat) ||
_mesa_is_depthstencil_format(internalformat))
buffer[0] = GL_TRUE;
break;
case GL_STENCIL_COMPONENTS:
/* The ARB_internalformat_query2 spec says:
*
* "- STENCIL_COMPONENTS: If the internal format contains a stencil
* component (S), TRUE is returned in <params>. If the internal format
* is unsupported or contains no stencil component, FALSE is returned.
*/
if (_mesa_is_stencil_format(internalformat) ||
_mesa_is_depthstencil_format(internalformat))
buffer[0] = GL_TRUE;
break;
case GL_COLOR_RENDERABLE:
case GL_DEPTH_RENDERABLE:
case GL_STENCIL_RENDERABLE:
if (!_is_renderable(ctx, internalformat))
goto end;
if (pname == GL_COLOR_RENDERABLE) {
if (!_mesa_is_color_format(internalformat))
goto end;
} else {
GLenum baseFormat = _mesa_base_fbo_format(ctx, internalformat);
if (baseFormat != GL_DEPTH_STENCIL &&
((pname == GL_DEPTH_RENDERABLE && baseFormat != GL_DEPTH_COMPONENT) ||
(pname == GL_STENCIL_RENDERABLE && baseFormat != GL_STENCIL_INDEX)))
goto end;
}
buffer[0] = GL_TRUE;
break;
case GL_FRAMEBUFFER_RENDERABLE_LAYERED:
if (!_mesa_has_EXT_texture_array(ctx) ||
_legal_target_for_framebuffer_texture_layer(ctx, target))
goto end;
/* fallthrough */
case GL_FRAMEBUFFER_RENDERABLE:
case GL_FRAMEBUFFER_BLEND:
if (!_mesa_has_ARB_framebuffer_object(ctx))
goto end;
if (target == GL_TEXTURE_BUFFER ||
!_is_renderable(ctx, internalformat))
goto end;
ctx->Driver.QueryInternalFormat(ctx, target, internalformat, pname,
buffer);
break;
case GL_READ_PIXELS:
case GL_READ_PIXELS_FORMAT:
case GL_READ_PIXELS_TYPE:
ctx->Driver.QueryInternalFormat(ctx, target, internalformat, pname,
buffer);
break;
case GL_TEXTURE_IMAGE_FORMAT:
case GL_GET_TEXTURE_IMAGE_FORMAT:
case GL_TEXTURE_IMAGE_TYPE:
case GL_GET_TEXTURE_IMAGE_TYPE:
ctx->Driver.QueryInternalFormat(ctx, target, internalformat, pname,
buffer);
break;
case GL_MIPMAP:
case GL_MANUAL_GENERATE_MIPMAP:
case GL_AUTO_GENERATE_MIPMAP:
if (!_mesa_is_valid_generate_texture_mipmap_target(ctx, target) ||
!_mesa_is_valid_generate_texture_mipmap_internalformat(ctx,
internalformat)) {
goto end;
}
if (pname == GL_MIPMAP) {
buffer[0] = GL_TRUE;
goto end;
}
else if (pname == GL_MANUAL_GENERATE_MIPMAP) {
if (!_mesa_has_ARB_framebuffer_object(ctx))
goto end;
}
else {
/* From ARB_internalformat_query2:
* "Dependencies on OpenGL 3.2 (Core Profile)
* In core profiles for OpenGL 3.2 and later versions, queries
* for the AUTO_GENERATE_MIPMAP <pname> return the appropriate
* unsupported response."
*/
if (_mesa_is_desktop_gl(ctx) && ctx->Version >= 32)
goto end;
}
ctx->Driver.QueryInternalFormat(ctx, target, internalformat, pname,
buffer);
break;
case GL_COLOR_ENCODING:
if (!_mesa_is_color_format(internalformat))
goto end;
if (_mesa_is_srgb_format(internalformat))
buffer[0] = GL_SRGB;
else
buffer[0] = GL_LINEAR;
break;
case GL_SRGB_READ:
if (!_mesa_has_EXT_texture_sRGB(ctx) ||
!_mesa_is_srgb_format(internalformat)) {
goto end;
}
ctx->Driver.QueryInternalFormat(ctx, target, internalformat, pname,
buffer);
break;
case GL_SRGB_WRITE:
if (!_mesa_has_EXT_framebuffer_sRGB(ctx) ||
!_mesa_is_color_format(internalformat)) {
goto end;
}
ctx->Driver.QueryInternalFormat(ctx, target, internalformat, pname,
buffer);
break;
case GL_SRGB_DECODE_ARB:
/* Presence of EXT_texture_sRGB_decode was already verified */
if (!_mesa_has_EXT_texture_sRGB(ctx) ||
target == GL_RENDERBUFFER ||
!_mesa_is_srgb_format(internalformat)) {
goto end;
}
ctx->Driver.QueryInternalFormat(ctx, target, internalformat, pname,
buffer);
break;
case GL_FILTER:
/* If it doesn't allow to set sampler parameters then it would not allow
* to set a filter different to GL_NEAREST. In practice, this method
* only filters out MULTISAMPLE/MULTISAMPLE_ARRAY */
if (!_mesa_target_allows_setting_sampler_parameters(target))
goto end;
if (_mesa_is_enum_format_integer(internalformat))
goto end;
if (target == GL_TEXTURE_BUFFER)
goto end;
/* At this point we know that multi-texel filtering is supported. We
* need to call the driver to know if it is CAVEAT_SUPPORT or
* FULL_SUPPORT.
*/
ctx->Driver.QueryInternalFormat(ctx, target, internalformat, pname,
buffer);
break;
case GL_VERTEX_TEXTURE:
case GL_TESS_CONTROL_TEXTURE:
case GL_TESS_EVALUATION_TEXTURE:
case GL_GEOMETRY_TEXTURE:
case GL_FRAGMENT_TEXTURE:
case GL_COMPUTE_TEXTURE:
if (target == GL_RENDERBUFFER)
goto end;
if ((pname == GL_TESS_CONTROL_TEXTURE ||
pname == GL_TESS_EVALUATION_TEXTURE) &&
!_mesa_has_tessellation(ctx))
goto end;
if (pname == GL_GEOMETRY_TEXTURE && !_mesa_has_geometry_shaders(ctx))
goto end;
if (pname == GL_COMPUTE_TEXTURE && !_mesa_has_compute_shaders(ctx))
goto end;
ctx->Driver.QueryInternalFormat(ctx, target, internalformat, pname,
buffer);
break;
case GL_TEXTURE_GATHER:
case GL_TEXTURE_GATHER_SHADOW:
if (!_mesa_has_ARB_texture_gather(ctx))
goto end;
/* fallthrough */
case GL_TEXTURE_SHADOW:
/* Only depth or depth-stencil image formats make sense in shadow
samplers */
if (pname != GL_TEXTURE_GATHER &&
!_mesa_is_depth_format(internalformat) &&
!_mesa_is_depthstencil_format(internalformat))
goto end;
/* Validate the target for shadow and gather operations */
switch (target) {
case GL_TEXTURE_2D:
case GL_TEXTURE_2D_ARRAY:
case GL_TEXTURE_CUBE_MAP:
case GL_TEXTURE_CUBE_MAP_ARRAY:
case GL_TEXTURE_RECTANGLE:
break;
case GL_TEXTURE_1D:
case GL_TEXTURE_1D_ARRAY:
/* 1D and 1DArray textures are not admitted in gather operations */
if (pname != GL_TEXTURE_SHADOW)
goto end;
break;
default:
goto end;
}
ctx->Driver.QueryInternalFormat(ctx, target, internalformat, pname,
buffer);
break;
case GL_SHADER_IMAGE_LOAD:
case GL_SHADER_IMAGE_STORE:
if (!_mesa_has_ARB_shader_image_load_store(ctx))
goto end;
/* We call to _mesa_is_shader_image_format_supported
* using "internalformat" as parameter, because the
* the ARB_internalformat_query2 spec says:
* "In this case the <internalformat> is the value of the <format>
* parameter that is passed to BindImageTexture."
*/
if (target == GL_RENDERBUFFER ||
!_mesa_is_shader_image_format_supported(ctx, internalformat))
goto end;
ctx->Driver.QueryInternalFormat(ctx, target, internalformat, pname,
buffer);
break;
case GL_SHADER_IMAGE_ATOMIC:
if (!_mesa_has_ARB_shader_image_load_store(ctx))
goto end;
ctx->Driver.QueryInternalFormat(ctx, target, internalformat, pname,
buffer);
break;
case GL_IMAGE_TEXEL_SIZE: {
mesa_format image_format;
if (!_mesa_has_ARB_shader_image_load_store(ctx) ||
target == GL_RENDERBUFFER)
goto end;
image_format = _mesa_get_shader_image_format(internalformat);
if (image_format == MESA_FORMAT_NONE)
goto end;
/* We return bits */
buffer[0] = (_mesa_get_format_bytes(image_format) * 8);
break;
}
case GL_IMAGE_COMPATIBILITY_CLASS:
if (!_mesa_has_ARB_shader_image_load_store(ctx) ||
target == GL_RENDERBUFFER)
goto end;
buffer[0] = _mesa_get_image_format_class(internalformat);
break;
case GL_IMAGE_PIXEL_FORMAT: {
GLint base_format;
if (!_mesa_has_ARB_shader_image_load_store(ctx) ||
target == GL_RENDERBUFFER ||
!_mesa_is_shader_image_format_supported(ctx, internalformat))
goto end;
base_format = _mesa_base_tex_format(ctx, internalformat);
if (base_format == -1)
goto end;
if (_mesa_is_enum_format_integer(internalformat))
buffer[0] = _mesa_base_format_to_integer_format(base_format);
else
buffer[0] = base_format;
break;
}
case GL_IMAGE_PIXEL_TYPE: {
mesa_format image_format;
GLenum datatype;
GLuint comps;
if (!_mesa_has_ARB_shader_image_load_store(ctx) ||
target == GL_RENDERBUFFER)
goto end;
image_format = _mesa_get_shader_image_format(internalformat);
if (image_format == MESA_FORMAT_NONE)
goto end;
_mesa_uncompressed_format_to_type_and_comps(image_format, &datatype,
&comps);
if (!datatype)
goto end;
buffer[0] = datatype;
break;
}
case GL_IMAGE_FORMAT_COMPATIBILITY_TYPE: {
if (!_mesa_has_ARB_shader_image_load_store(ctx))
goto end;
if (!_mesa_legal_get_tex_level_parameter_target(ctx, target, true))
goto end;
/* From spec: "Equivalent to calling GetTexParameter with <value> set
* to IMAGE_FORMAT_COMPATIBILITY_TYPE."
*
* GetTexParameter just returns
* tex_obj->ImageFormatCompatibilityType. We create a fake tex_obj
* just with the purpose of getting the value.
*/
struct gl_texture_object *tex_obj = _mesa_new_texture_object(ctx, 0, target);
buffer[0] = tex_obj->ImageFormatCompatibilityType;
_mesa_delete_texture_object(ctx, tex_obj);
break;
}
case GL_SIMULTANEOUS_TEXTURE_AND_DEPTH_TEST:
case GL_SIMULTANEOUS_TEXTURE_AND_STENCIL_TEST:
case GL_SIMULTANEOUS_TEXTURE_AND_DEPTH_WRITE:
case GL_SIMULTANEOUS_TEXTURE_AND_STENCIL_WRITE:
if (target == GL_RENDERBUFFER)
goto end;
if (!_mesa_is_depthstencil_format(internalformat)) {
if (((pname == GL_SIMULTANEOUS_TEXTURE_AND_DEPTH_TEST ||
pname == GL_SIMULTANEOUS_TEXTURE_AND_DEPTH_WRITE) &&
!_mesa_is_depth_format(internalformat)) ||
((pname == GL_SIMULTANEOUS_TEXTURE_AND_STENCIL_TEST ||
pname == GL_SIMULTANEOUS_TEXTURE_AND_STENCIL_WRITE) &&
!_mesa_is_stencil_format(internalformat)))
goto end;
}
ctx->Driver.QueryInternalFormat(ctx, target, internalformat, pname,
buffer);
break;
case GL_TEXTURE_COMPRESSED:
buffer[0] = _mesa_is_compressed_format(ctx, internalformat);
break;
case GL_TEXTURE_COMPRESSED_BLOCK_WIDTH:
case GL_TEXTURE_COMPRESSED_BLOCK_HEIGHT:
case GL_TEXTURE_COMPRESSED_BLOCK_SIZE: {
mesa_format mesaformat;
GLint block_size;
mesaformat = _mesa_glenum_to_compressed_format(internalformat);
if (mesaformat == MESA_FORMAT_NONE)
goto end;
block_size = _mesa_get_format_bytes(mesaformat);
assert(block_size > 0);
if (pname == GL_TEXTURE_COMPRESSED_BLOCK_SIZE) {
buffer[0] = block_size;
} else {
GLuint bwidth, bheight;
/* Returns the width and height in pixels. We return bytes */
_mesa_get_format_block_size(mesaformat, &bwidth, &bheight);
assert(bwidth > 0 && bheight > 0);
if (pname == GL_TEXTURE_COMPRESSED_BLOCK_WIDTH)
buffer[0] = block_size / bheight;
else
buffer[0] = block_size / bwidth;
}
break;
}
case GL_CLEAR_BUFFER:
if (target != GL_TEXTURE_BUFFER)
goto end;
ctx->Driver.QueryInternalFormat(ctx, target, internalformat, pname,
buffer);
break;
case GL_TEXTURE_VIEW:
case GL_VIEW_COMPATIBILITY_CLASS:
if (!_mesa_has_ARB_texture_view(ctx) ||
target == GL_TEXTURE_BUFFER ||
target == GL_RENDERBUFFER)
goto end;
if (pname == GL_TEXTURE_VIEW) {
ctx->Driver.QueryInternalFormat(ctx, target, internalformat, pname,
buffer);
} else {
GLenum view_class = _mesa_texture_view_lookup_view_class(ctx,
internalformat);
if (view_class == GL_FALSE)
goto end;
buffer[0] = view_class;
}
break;
default:
unreachable("bad param");
}
end:
if (bufSize != 0 && params == NULL) {
/* Emit a warning to aid application debugging, but go ahead and do the
* memcpy (and probably crash) anyway.
*/
_mesa_warning(ctx,
"glGetInternalformativ(bufSize = %d, but params = NULL)",
bufSize);
}
/* Copy the data from the temporary buffer to the buffer supplied by the
* application. Clamp the size of the copy to the size supplied by the
* application.
*/
memcpy(params, buffer, MIN2(bufSize, 16) * sizeof(GLint));
return;
}
/**
* Implements a rectangular block transfer (blit) of pixels between two
* miptrees.
*
* Our blitter can operate on 1, 2, or 4-byte-per-pixel data, with generous,
* but limited, pitches and sizes allowed.
*
* The src/dst coordinates are relative to the given level/slice of the
* miptree.
*
* If @src_flip or @dst_flip is set, then the rectangle within that miptree
* will be inverted (including scanline order) when copying. This is common
* in GL when copying between window system and user-created
* renderbuffers/textures.
*/
bool
intel_miptree_blit(struct brw_context *brw,
struct intel_mipmap_tree *src_mt,
int src_level, int src_slice,
uint32_t src_x, uint32_t src_y, bool src_flip,
struct intel_mipmap_tree *dst_mt,
int dst_level, int dst_slice,
uint32_t dst_x, uint32_t dst_y, bool dst_flip,
uint32_t width, uint32_t height,
enum gl_logicop_mode logicop)
{
/* The blitter doesn't understand multisampling at all. */
if (src_mt->surf.samples > 1 || dst_mt->surf.samples > 1)
return false;
/* No sRGB decode or encode is done by the hardware blitter, which is
* consistent with what we want in many callers (glCopyTexSubImage(),
* texture validation, etc.).
*/
mesa_format src_format = _mesa_get_srgb_format_linear(src_mt->format);
mesa_format dst_format = _mesa_get_srgb_format_linear(dst_mt->format);
/* The blitter doesn't support doing any format conversions. We do also
* support blitting ARGB8888 to XRGB8888 (trivial, the values dropped into
* the X channel don't matter), and XRGB8888 to ARGB8888 by setting the A
* channel to 1.0 at the end. Also trivially ARGB2101010 to XRGB2101010,
* but not XRGB2101010 to ARGB2101010 yet.
*/
if (!intel_miptree_blit_compatible_formats(src_format, dst_format)) {
perf_debug("%s: Can't use hardware blitter from %s to %s, "
"falling back.\n", __func__,
_mesa_get_format_name(src_format),
_mesa_get_format_name(dst_format));
return false;
}
/* The blitter has no idea about HiZ or fast color clears, so we need to
* resolve the miptrees before we do anything.
*/
intel_miptree_access_raw(brw, src_mt, src_level, src_slice, false);
intel_miptree_access_raw(brw, dst_mt, dst_level, dst_slice, true);
if (src_flip) {
const unsigned h0 = src_mt->surf.phys_level0_sa.height;
src_y = minify(h0, src_level - src_mt->first_level) - src_y - height;
}
if (dst_flip) {
const unsigned h0 = dst_mt->surf.phys_level0_sa.height;
dst_y = minify(h0, dst_level - dst_mt->first_level) - dst_y - height;
}
uint32_t src_image_x, src_image_y, dst_image_x, dst_image_y;
intel_miptree_get_image_offset(src_mt, src_level, src_slice,
&src_image_x, &src_image_y);
intel_miptree_get_image_offset(dst_mt, dst_level, dst_slice,
&dst_image_x, &dst_image_y);
src_x += src_image_x;
src_y += src_image_y;
dst_x += dst_image_x;
dst_y += dst_image_y;
if (!emit_miptree_blit(brw, src_mt, src_x, src_y,
dst_mt, dst_x, dst_y, width, height,
src_flip != dst_flip, logicop)) {
return false;
}
/* XXX This could be done in a single pass using XY_FULL_MONO_PATTERN_BLT */
if (_mesa_get_format_bits(src_format, GL_ALPHA_BITS) == 0 &&
_mesa_get_format_bits(dst_format, GL_ALPHA_BITS) > 0) {
intel_miptree_set_alpha_to_one(brw, dst_mt,
dst_x, dst_y,
width, height);
}
return true;
}
/**
* Convert the given color to a bitfield suitable for ORing into DWORD 7 of
* SURFACE_STATE (DWORD 12-15 on SKL+).
*/
union isl_color_value
brw_meta_convert_fast_clear_color(const struct brw_context *brw,
const struct intel_mipmap_tree *mt,
const union gl_color_union *color)
{
union isl_color_value override_color = {
.u32 = {
color->ui[0],
color->ui[1],
color->ui[2],
color->ui[3],
},
};
/* The sampler doesn't look at the format of the surface when the fast
* clear color is used so we need to implement luminance, intensity and
* missing components manually.
*/
switch (_mesa_get_format_base_format(mt->format)) {
case GL_INTENSITY:
override_color.u32[3] = override_color.u32[0];
/* flow through */
case GL_LUMINANCE:
case GL_LUMINANCE_ALPHA:
override_color.u32[1] = override_color.u32[0];
override_color.u32[2] = override_color.u32[0];
break;
default:
for (int i = 0; i < 3; i++) {
if (!_mesa_format_has_color_component(mt->format, i))
override_color.u32[i] = 0;
}
break;
}
switch (_mesa_get_format_datatype(mt->format)) {
case GL_UNSIGNED_NORMALIZED:
for (int i = 0; i < 4; i++)
override_color.f32[i] = CLAMP(override_color.f32[i], 0.0f, 1.0f);
break;
case GL_SIGNED_NORMALIZED:
for (int i = 0; i < 4; i++)
override_color.f32[i] = CLAMP(override_color.f32[i], -1.0f, 1.0f);
break;
case GL_UNSIGNED_INT:
for (int i = 0; i < 4; i++) {
unsigned bits = _mesa_get_format_bits(mt->format, GL_RED_BITS + i);
if (bits < 32) {
uint32_t max = (1u << bits) - 1;
override_color.u32[i] = MIN2(override_color.u32[i], max);
}
}
break;
case GL_INT:
for (int i = 0; i < 4; i++) {
unsigned bits = _mesa_get_format_bits(mt->format, GL_RED_BITS + i);
if (bits < 32) {
int32_t max = (1 << (bits - 1)) - 1;
int32_t min = -(1 << (bits - 1));
override_color.i32[i] = CLAMP(override_color.i32[i], min, max);
}
}
break;
case GL_FLOAT:
if (!_mesa_is_format_signed(mt->format)) {
for (int i = 0; i < 4; i++)
override_color.f32[i] = MAX2(override_color.f32[i], 0.0f);
}
break;
}
if (!_mesa_format_has_color_component(mt->format, 3)) {
if (_mesa_is_format_integer_color(mt->format))
override_color.u32[3] = 1;
else
override_color.f32[3] = 1.0f;
}
/* Handle linear to SRGB conversion */
if (brw->ctx.Color.sRGBEnabled &&
_mesa_get_srgb_format_linear(mt->format) != mt->format) {
for (int i = 0; i < 3; i++) {
override_color.f32[i] =
util_format_linear_to_srgb_float(override_color.f32[i]);
}
}
return override_color;
}
/**
* The glGet queries of the framebuffer red/green/blue size, stencil size,
* etc. are satisfied by the fields of ctx->DrawBuffer->Visual. These can
* change depending on the renderbuffer bindings. This function updates
* the given framebuffer's Visual from the current renderbuffer bindings.
*
* This may apply to user-created framebuffers or window system framebuffers.
*
* Also note: ctx->DrawBuffer->Visual.depthBits might not equal
* ctx->DrawBuffer->Attachment[BUFFER_DEPTH].Renderbuffer.DepthBits.
* The former one is used to convert floating point depth values into
* integer Z values.
*/
void
_mesa_update_framebuffer_visual(struct gl_context *ctx,
struct gl_framebuffer *fb)
{
GLuint i;
memset(&fb->Visual, 0, sizeof(fb->Visual));
fb->Visual.rgbMode = GL_TRUE; /* assume this */
#if 0 /* this _might_ be needed */
if (fb->_Status != GL_FRAMEBUFFER_COMPLETE_EXT) {
/* leave visual fields zero'd */
return;
}
#endif
/* find first RGB renderbuffer */
for (i = 0; i < BUFFER_COUNT; i++) {
if (fb->Attachment[i].Renderbuffer) {
const struct gl_renderbuffer *rb = fb->Attachment[i].Renderbuffer;
const GLenum baseFormat = _mesa_get_format_base_format(rb->Format);
const gl_format fmt = rb->Format;
if (_mesa_is_legal_color_format(ctx, baseFormat)) {
fb->Visual.redBits = _mesa_get_format_bits(fmt, GL_RED_BITS);
fb->Visual.greenBits = _mesa_get_format_bits(fmt, GL_GREEN_BITS);
fb->Visual.blueBits = _mesa_get_format_bits(fmt, GL_BLUE_BITS);
fb->Visual.alphaBits = _mesa_get_format_bits(fmt, GL_ALPHA_BITS);
fb->Visual.rgbBits = fb->Visual.redBits
+ fb->Visual.greenBits + fb->Visual.blueBits;
fb->Visual.samples = rb->NumSamples;
fb->Visual.sampleBuffers = rb->NumSamples > 0 ? 1 : 0;
if (_mesa_get_format_color_encoding(fmt) == GL_SRGB)
fb->Visual.sRGBCapable = ctx->Const.sRGBCapable;
break;
}
}
}
fb->Visual.floatMode = GL_FALSE;
for (i = 0; i < BUFFER_COUNT; i++) {
if (fb->Attachment[i].Renderbuffer) {
const struct gl_renderbuffer *rb = fb->Attachment[i].Renderbuffer;
const gl_format fmt = rb->Format;
if (_mesa_get_format_datatype(fmt) == GL_FLOAT) {
fb->Visual.floatMode = GL_TRUE;
break;
}
}
}
if (fb->Attachment[BUFFER_DEPTH].Renderbuffer) {
const struct gl_renderbuffer *rb =
fb->Attachment[BUFFER_DEPTH].Renderbuffer;
const gl_format fmt = rb->Format;
fb->Visual.haveDepthBuffer = GL_TRUE;
fb->Visual.depthBits = _mesa_get_format_bits(fmt, GL_DEPTH_BITS);
}
if (fb->Attachment[BUFFER_STENCIL].Renderbuffer) {
const struct gl_renderbuffer *rb =
fb->Attachment[BUFFER_STENCIL].Renderbuffer;
const gl_format fmt = rb->Format;
fb->Visual.haveStencilBuffer = GL_TRUE;
fb->Visual.stencilBits = _mesa_get_format_bits(fmt, GL_STENCIL_BITS);
}
if (fb->Attachment[BUFFER_ACCUM].Renderbuffer) {
const struct gl_renderbuffer *rb =
fb->Attachment[BUFFER_ACCUM].Renderbuffer;
const gl_format fmt = rb->Format;
fb->Visual.haveAccumBuffer = GL_TRUE;
fb->Visual.accumRedBits = _mesa_get_format_bits(fmt, GL_RED_BITS);
fb->Visual.accumGreenBits = _mesa_get_format_bits(fmt, GL_GREEN_BITS);
fb->Visual.accumBlueBits = _mesa_get_format_bits(fmt, GL_BLUE_BITS);
fb->Visual.accumAlphaBits = _mesa_get_format_bits(fmt, GL_ALPHA_BITS);
}
compute_depth_max(fb);
}
bool
brw_blorp_copytexsubimage(struct brw_context *brw,
struct gl_renderbuffer *src_rb,
struct gl_texture_image *dst_image,
int slice,
int srcX0, int srcY0,
int dstX0, int dstY0,
int width, int height)
{
struct gl_context *ctx = &brw->ctx;
struct intel_renderbuffer *src_irb = intel_renderbuffer(src_rb);
struct intel_texture_image *intel_image = intel_texture_image(dst_image);
/* No pixel transfer operations (zoom, bias, mapping), just a blit */
if (brw->ctx._ImageTransferState)
return false;
/* Sync up the state of window system buffers. We need to do this before
* we go looking at the src renderbuffer's miptree.
*/
intel_prepare_render(brw);
struct intel_mipmap_tree *src_mt = src_irb->mt;
struct intel_mipmap_tree *dst_mt = intel_image->mt;
/* There is support for only up to eight samples. */
if (src_mt->num_samples > 8 || dst_mt->num_samples > 8)
return false;
/* BLORP is only supported from Gen6 onwards. */
if (brw->gen < 6)
return false;
if (_mesa_get_format_base_format(src_rb->Format) !=
_mesa_get_format_base_format(dst_image->TexFormat)) {
return false;
}
/* We can't handle format conversions between Z24 and other formats since
* we have to lie about the surface format. See the comments in
* brw_blorp_surface_info::set().
*/
if ((src_mt->format == MESA_FORMAT_Z24_UNORM_X8_UINT) !=
(dst_mt->format == MESA_FORMAT_Z24_UNORM_X8_UINT)) {
return false;
}
if (!brw->format_supported_as_render_target[dst_image->TexFormat])
return false;
/* Source clipping shouldn't be necessary, since copytexsubimage (in
* src/mesa/main/teximage.c) calls _mesa_clip_copytexsubimage() which
* takes care of it.
*
* Destination clipping shouldn't be necessary since the restrictions on
* glCopyTexSubImage prevent the user from specifying a destination rectangle
* that falls outside the bounds of the destination texture.
* See error_check_subtexture_dimensions().
*/
int srcY1 = srcY0 + height;
int srcX1 = srcX0 + width;
int dstX1 = dstX0 + width;
int dstY1 = dstY0 + height;
/* Account for the fact that in the system framebuffer, the origin is at
* the lower left.
*/
bool mirror_y = false;
if (_mesa_is_winsys_fbo(ctx->ReadBuffer)) {
GLint tmp = src_rb->Height - srcY0;
srcY0 = src_rb->Height - srcY1;
srcY1 = tmp;
mirror_y = true;
}
/* Account for face selection and texture view MinLayer */
int dst_slice = slice + dst_image->TexObject->MinLayer + dst_image->Face;
int dst_level = dst_image->Level + dst_image->TexObject->MinLevel;
brw_blorp_blit_miptrees(brw,
src_mt, src_irb->mt_level, src_irb->mt_layer,
src_rb->Format, blorp_get_texture_swizzle(src_irb),
dst_mt, dst_level, dst_slice,
dst_image->TexFormat,
srcX0, srcY0, srcX1, srcY1,
dstX0, dstY0, dstX1, dstY1,
GL_NEAREST, false, mirror_y,
false, false);
/* If we're copying to a packed depth stencil texture and the source
* framebuffer has separate stencil, we need to also copy the stencil data
* over.
*/
src_rb = ctx->ReadBuffer->Attachment[BUFFER_STENCIL].Renderbuffer;
if (_mesa_get_format_bits(dst_image->TexFormat, GL_STENCIL_BITS) > 0 &&
src_rb != NULL) {
src_irb = intel_renderbuffer(src_rb);
src_mt = src_irb->mt;
if (src_mt->stencil_mt)
src_mt = src_mt->stencil_mt;
if (dst_mt->stencil_mt)
dst_mt = dst_mt->stencil_mt;
if (src_mt != dst_mt) {
brw_blorp_blit_miptrees(brw,
src_mt, src_irb->mt_level, src_irb->mt_layer,
src_mt->format,
blorp_get_texture_swizzle(src_irb),
dst_mt, dst_level, dst_slice,
dst_mt->format,
srcX0, srcY0, srcX1, srcY1,
dstX0, dstY0, dstX1, dstY1,
GL_NEAREST, false, mirror_y,
false, false);
}
}
return true;
}
/**
* Clear the stencil buffer. If the buffer is a combined
* depth+stencil buffer, only the stencil bits will be touched.
*/
void
_swrast_clear_stencil_buffer(struct gl_context *ctx)
{
struct gl_renderbuffer *rb =
ctx->DrawBuffer->Attachment[BUFFER_STENCIL].Renderbuffer;
const GLubyte stencilBits = ctx->DrawBuffer->Visual.stencilBits;
const GLuint writeMask = ctx->Stencil.WriteMask[0];
const GLuint stencilMax = (1 << stencilBits) - 1;
GLint x, y, width, height;
GLubyte *map;
GLint rowStride, i, j;
GLbitfield mapMode;
if (!rb || writeMask == 0)
return;
/* compute region to clear */
x = ctx->DrawBuffer->_Xmin;
y = ctx->DrawBuffer->_Ymin;
width = ctx->DrawBuffer->_Xmax - ctx->DrawBuffer->_Xmin;
height = ctx->DrawBuffer->_Ymax - ctx->DrawBuffer->_Ymin;
mapMode = GL_MAP_WRITE_BIT;
if ((writeMask & stencilMax) != stencilMax) {
/* need to mask stencil values */
mapMode |= GL_MAP_READ_BIT;
}
else if (_mesa_get_format_bits(rb->Format, GL_DEPTH_BITS) > 0) {
/* combined depth+stencil, need to mask Z values */
mapMode |= GL_MAP_READ_BIT;
}
ctx->Driver.MapRenderbuffer(ctx, rb, x, y, width, height,
mapMode, &map, &rowStride);
if (!map) {
_mesa_error(ctx, GL_OUT_OF_MEMORY, "glClear(stencil)");
return;
}
switch (rb->Format) {
case MESA_FORMAT_S8:
{
GLubyte clear = ctx->Stencil.Clear & writeMask & 0xff;
GLubyte mask = (~writeMask) & 0xff;
if (mask != 0) {
/* masked clear */
for (i = 0; i < height; i++) {
GLubyte *row = map;
for (j = 0; j < width; j++) {
row[j] = (row[j] & mask) | clear;
}
map += rowStride;
}
}
else if (rowStride == width) {
/* clear whole buffer */
memset(map, clear, width * height);
}
else {
/* clear scissored */
for (i = 0; i < height; i++) {
memset(map, clear, width);
map += rowStride;
}
}
}
break;
case MESA_FORMAT_S8_Z24:
{
GLuint clear = (ctx->Stencil.Clear & writeMask & 0xff) << 24;
GLuint mask = (((~writeMask) & 0xff) << 24) | 0xffffff;
for (i = 0; i < height; i++) {
GLuint *row = (GLuint *) map;
for (j = 0; j < width; j++) {
row[j] = (row[j] & mask) | clear;
}
map += rowStride;
}
}
break;
case MESA_FORMAT_Z24_S8:
{
GLuint clear = ctx->Stencil.Clear & writeMask & 0xff;
GLuint mask = 0xffffff00 | ((~writeMask) & 0xff);
for (i = 0; i < height; i++) {
GLuint *row = (GLuint *) map;
for (j = 0; j < width; j++) {
row[j] = (row[j] & mask) | clear;
}
map += rowStride;
}
}
break;
default:
_mesa_problem(ctx, "Unexpected stencil buffer format %s"
" in _swrast_clear_stencil_buffer()",
_mesa_get_format_name(rb->Format));
}
ctx->Driver.UnmapRenderbuffer(ctx, rb);
}
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);
}
/**
* Check if the renderbuffer for a read operation (glReadPixels, glCopyPixels,
* glCopyTex[Sub]Image, etc) exists.
* \param format a basic image format such as GL_RGB, GL_RGBA, GL_ALPHA,
* GL_DEPTH_COMPONENT, etc. or GL_COLOR, GL_DEPTH, GL_STENCIL.
* \return GL_TRUE if buffer exists, GL_FALSE otherwise
*/
GLboolean
_mesa_source_buffer_exists(struct gl_context *ctx, GLenum format)
{
const struct gl_renderbuffer_attachment *att = ctx->ReadBuffer->Attachment;
/* If we don't know the framebuffer status, update it now */
if (ctx->ReadBuffer->_Status == 0) {
_mesa_test_framebuffer_completeness(ctx, ctx->ReadBuffer);
}
if (ctx->ReadBuffer->_Status != GL_FRAMEBUFFER_COMPLETE_EXT) {
return GL_FALSE;
}
switch (format) {
case GL_COLOR:
case GL_RED:
case GL_GREEN:
case GL_BLUE:
case GL_ALPHA:
case GL_LUMINANCE:
case GL_LUMINANCE_ALPHA:
case GL_INTENSITY:
case GL_RG:
case GL_RGB:
case GL_BGR:
case GL_RGBA:
case GL_BGRA:
case GL_ABGR_EXT:
case GL_COLOR_INDEX:
case GL_RED_INTEGER_EXT:
case GL_GREEN_INTEGER_EXT:
case GL_BLUE_INTEGER_EXT:
case GL_ALPHA_INTEGER_EXT:
case GL_RGB_INTEGER_EXT:
case GL_RGBA_INTEGER_EXT:
case GL_BGR_INTEGER_EXT:
case GL_BGRA_INTEGER_EXT:
case GL_LUMINANCE_INTEGER_EXT:
case GL_LUMINANCE_ALPHA_INTEGER_EXT:
if (ctx->ReadBuffer->_ColorReadBuffer == NULL) {
return GL_FALSE;
}
ASSERT(_mesa_get_format_bits(ctx->ReadBuffer->_ColorReadBuffer->Format, GL_RED_BITS) > 0 ||
_mesa_get_format_bits(ctx->ReadBuffer->_ColorReadBuffer->Format, GL_ALPHA_BITS) > 0 ||
_mesa_get_format_bits(ctx->ReadBuffer->_ColorReadBuffer->Format, GL_INDEX_BITS) > 0);
break;
case GL_DEPTH:
case GL_DEPTH_COMPONENT:
if (!att[BUFFER_DEPTH].Renderbuffer) {
return GL_FALSE;
}
/*ASSERT(att[BUFFER_DEPTH].Renderbuffer->DepthBits > 0);*/
break;
case GL_STENCIL:
case GL_STENCIL_INDEX:
if (!att[BUFFER_STENCIL].Renderbuffer) {
return GL_FALSE;
}
/*ASSERT(att[BUFFER_STENCIL].Renderbuffer->StencilBits > 0);*/
break;
case GL_DEPTH_STENCIL_EXT:
if (!att[BUFFER_DEPTH].Renderbuffer ||
!att[BUFFER_STENCIL].Renderbuffer) {
return GL_FALSE;
}
/*
ASSERT(att[BUFFER_DEPTH].Renderbuffer->DepthBits > 0);
ASSERT(att[BUFFER_STENCIL].Renderbuffer->StencilBits > 0);
*/
break;
default:
_mesa_problem(ctx,
"Unexpected format 0x%x in _mesa_source_buffer_exists",
format);
return GL_FALSE;
}
/* OK */
return GL_TRUE;
}
