static __DRIimage *
intel_create_image_from_texture(__DRIcontext *context, int target,
unsigned texture, int zoffset,
int level,
unsigned *error,
void *loaderPrivate)
{
__DRIimage *image;
struct brw_context *brw = context->driverPrivate;
struct gl_texture_object *obj;
struct intel_texture_object *iobj;
GLuint face = 0;
obj = _mesa_lookup_texture(&brw->ctx, texture);
if (!obj || obj->Target != target) {
*error = __DRI_IMAGE_ERROR_BAD_PARAMETER;
return NULL;
}
if (target == GL_TEXTURE_CUBE_MAP)
face = zoffset;
_mesa_test_texobj_completeness(&brw->ctx, obj);
iobj = intel_texture_object(obj);
if (!obj->_BaseComplete || (level > 0 && !obj->_MipmapComplete)) {
*error = __DRI_IMAGE_ERROR_BAD_PARAMETER;
return NULL;
}
if (level < obj->BaseLevel || level > obj->_MaxLevel) {
*error = __DRI_IMAGE_ERROR_BAD_MATCH;
return NULL;
}
if (target == GL_TEXTURE_3D && obj->Image[face][level]->Depth < zoffset) {
*error = __DRI_IMAGE_ERROR_BAD_MATCH;
return NULL;
}
image = calloc(1, sizeof *image);
if (image == NULL) {
*error = __DRI_IMAGE_ERROR_BAD_ALLOC;
return NULL;
}
image->internal_format = obj->Image[face][level]->InternalFormat;
image->format = obj->Image[face][level]->TexFormat;
image->data = loaderPrivate;
intel_setup_image_from_mipmap_tree(brw, image, iobj->mt, level, zoffset);
image->dri_format = driGLFormatToImageFormat(image->format);
image->has_depthstencil = iobj->mt->stencil_mt? true : false;
if (image->dri_format == MESA_FORMAT_NONE) {
*error = __DRI_IMAGE_ERROR_BAD_PARAMETER;
free(image);
return NULL;
}
*error = __DRI_IMAGE_ERROR_SUCCESS;
return image;
}
static struct gl_texture_object *
update_single_program_texture(struct gl_context *ctx, struct gl_program *prog,
int s)
{
gl_texture_index target_index;
struct gl_texture_unit *texUnit;
struct gl_texture_object *texObj;
struct gl_sampler_object *sampler;
int unit;
if (!(prog->SamplersUsed & (1 << s)))
return NULL;
unit = prog->SamplerUnits[s];
texUnit = &ctx->Texture.Unit[unit];
/* Note: If more than one bit was set in TexturesUsed[unit], then we should
* have had the draw call rejected already. From the GL 4.4 specification,
* section 7.10 ("Samplers"):
*
* "It is not allowed to have variables of different sampler types
* pointing to the same texture image unit within a program
* object. This situation can only be detected at the next rendering
* command issued which triggers shader invocations, and an
* INVALID_OPERATION error will then be generated."
*/
target_index = ffs(prog->TexturesUsed[unit]) - 1;
texObj = texUnit->CurrentTex[target_index];
sampler = texUnit->Sampler ?
texUnit->Sampler : &texObj->Sampler;
if (likely(texObj)) {
if (_mesa_is_texture_complete(texObj, sampler))
return texObj;
_mesa_test_texobj_completeness(ctx, texObj);
if (_mesa_is_texture_complete(texObj, sampler))
return texObj;
}
/* If we've reached this point, we didn't find a complete texture of the
* shader's target. From the GL 4.4 core specification, section 11.1.3.5
* ("Texture Access"):
*
* "If a sampler is used in a shader and the sampler’s associated
* texture is not complete, as defined in section 8.17, (0, 0, 0, 1)
* will be returned for a non-shadow sampler and 0 for a shadow
* sampler."
*
* Mesa implements this by creating a hidden texture object with a pixel of
* that value.
*/
texObj = _mesa_get_fallback_texture(ctx, target_index);
assert(texObj);
return texObj;
}
GLboolean
_mesa_is_image_unit_valid(struct gl_context *ctx, struct gl_image_unit *u)
{
struct gl_texture_object *t = u->TexObj;
mesa_format tex_format;
if (!t)
return GL_FALSE;
if (!t->_BaseComplete && !t->_MipmapComplete)
_mesa_test_texobj_completeness(ctx, t);
if (u->Level < t->BaseLevel ||
u->Level > t->_MaxLevel ||
(u->Level == t->BaseLevel && !t->_BaseComplete) ||
(u->Level != t->BaseLevel && !t->_MipmapComplete))
return GL_FALSE;
if (_mesa_tex_target_is_layered(t->Target) &&
u->_Layer >= _mesa_get_texture_layers(t, u->Level))
return GL_FALSE;
if (t->Target == GL_TEXTURE_BUFFER) {
tex_format = _mesa_get_shader_image_format(t->BufferObjectFormat);
} else {
struct gl_texture_image *img = (t->Target == GL_TEXTURE_CUBE_MAP ?
t->Image[u->_Layer][u->Level] :
t->Image[0][u->Level]);
if (!img || img->Border || img->NumSamples > ctx->Const.MaxImageSamples)
return GL_FALSE;
tex_format = _mesa_get_shader_image_format(img->InternalFormat);
}
if (!tex_format)
return GL_FALSE;
switch (t->ImageFormatCompatibilityType) {
case GL_IMAGE_FORMAT_COMPATIBILITY_BY_SIZE:
if (_mesa_get_format_bytes(tex_format) !=
_mesa_get_format_bytes(u->_ActualFormat))
return GL_FALSE;
break;
case GL_IMAGE_FORMAT_COMPATIBILITY_BY_CLASS:
if (get_image_format_class(tex_format) !=
get_image_format_class(u->_ActualFormat))
return GL_FALSE;
break;
default:
assert(!"Unexpected image format compatibility type");
}
return GL_TRUE;
}
static GLboolean
validate_image_unit(struct gl_context *ctx, struct gl_image_unit *u)
{
struct gl_texture_object *t = u->TexObj;
struct gl_texture_image *img;
if (!t || u->Level < t->BaseLevel ||
u->Level > t->_MaxLevel)
return GL_FALSE;
_mesa_test_texobj_completeness(ctx, t);
if ((u->Level == t->BaseLevel && !t->_BaseComplete) ||
(u->Level != t->BaseLevel && !t->_MipmapComplete))
return GL_FALSE;
if (_mesa_tex_target_is_layered(t->Target) &&
u->Layer >= _mesa_get_texture_layers(t, u->Level))
return GL_FALSE;
if (t->Target == GL_TEXTURE_CUBE_MAP)
img = t->Image[u->Layer][u->Level];
else
img = t->Image[0][u->Level];
if (!img || img->Border ||
get_image_format_class(img->TexFormat) == IMAGE_FORMAT_CLASS_NONE ||
img->NumSamples > ctx->Const.MaxImageSamples)
return GL_FALSE;
switch (t->ImageFormatCompatibilityType) {
case GL_IMAGE_FORMAT_COMPATIBILITY_BY_SIZE:
if (_mesa_get_format_bytes(img->TexFormat) !=
_mesa_get_format_bytes(u->_ActualFormat))
return GL_FALSE;
break;
case GL_IMAGE_FORMAT_COMPATIBILITY_BY_CLASS:
if (get_image_format_class(img->TexFormat) !=
get_image_format_class(u->_ActualFormat))
return GL_FALSE;
break;
default:
assert(!"Unexpected image format compatibility type");
}
return GL_TRUE;
}
/**
* Return pointer to a default/fallback texture.
* The texture is a 2D 8x8 RGBA texture with all texels = (0,0,0,1).
* That's the value a sampler should get when sampling from an
* incomplete texture.
*/
struct gl_texture_object *
_mesa_get_fallback_texture(struct gl_context *ctx)
{
if (!ctx->Shared->FallbackTex) {
/* create fallback texture now */
static GLubyte texels[8 * 8][4];
struct gl_texture_object *texObj;
struct gl_texture_image *texImage;
gl_format texFormat;
GLuint i;
for (i = 0; i < 8 * 8; i++) {
texels[i][0] =
texels[i][1] =
texels[i][2] = 0x0;
texels[i][3] = 0xff;
}
/* create texture object */
texObj = ctx->Driver.NewTextureObject(ctx, 0, GL_TEXTURE_2D);
assert(texObj->RefCount == 1);
texObj->Sampler.MinFilter = GL_NEAREST;
texObj->Sampler.MagFilter = GL_NEAREST;
/* create level[0] texture image */
texImage = _mesa_get_tex_image(ctx, texObj, GL_TEXTURE_2D, 0);
texFormat = ctx->Driver.ChooseTextureFormat(ctx, GL_RGBA, GL_RGBA,
GL_UNSIGNED_BYTE);
/* init the image fields */
_mesa_init_teximage_fields(ctx, texImage,
8, 8, 1, 0, GL_RGBA, texFormat);
ASSERT(texImage->TexFormat != MESA_FORMAT_NONE);
/* set image data */
ctx->Driver.TexImage2D(ctx, texImage, GL_RGBA,
8, 8, 0,
GL_RGBA, GL_UNSIGNED_BYTE, texels,
&ctx->DefaultPacking);
_mesa_test_texobj_completeness(ctx, texObj);
assert(texObj->_Complete);
ctx->Shared->FallbackTex = texObj;
}
return ctx->Shared->FallbackTex;
}
/**
* Return pointer to a default/fallback texture of the given type/target.
* The texture is an RGBA texture with all texels = (0,0,0,1).
* That's the value a GLSL sampler should get when sampling from an
* incomplete texture.
*/
struct gl_texture_object *
_mesa_get_fallback_texture(struct gl_context *ctx, gl_texture_index tex)
{
if (!ctx->Shared->FallbackTex[tex]) {
/* create fallback texture now */
const GLsizei width = 1, height = 1, depth = 1;
GLubyte texel[4];
struct gl_texture_object *texObj;
struct gl_texture_image *texImage;
gl_format texFormat;
GLuint dims, face, numFaces = 1;
GLenum target;
texel[0] =
texel[1] =
texel[2] = 0x0;
texel[3] = 0xff;
switch (tex) {
case TEXTURE_2D_ARRAY_INDEX:
dims = 3;
target = GL_TEXTURE_2D_ARRAY;
break;
case TEXTURE_1D_ARRAY_INDEX:
dims = 2;
target = GL_TEXTURE_1D_ARRAY;
break;
case TEXTURE_CUBE_INDEX:
dims = 2;
target = GL_TEXTURE_CUBE_MAP;
numFaces = 6;
break;
case TEXTURE_3D_INDEX:
dims = 3;
target = GL_TEXTURE_3D;
break;
case TEXTURE_RECT_INDEX:
dims = 2;
target = GL_TEXTURE_RECTANGLE;
break;
case TEXTURE_2D_INDEX:
dims = 2;
target = GL_TEXTURE_2D;
break;
case TEXTURE_1D_INDEX:
dims = 1;
target = GL_TEXTURE_1D;
break;
case TEXTURE_BUFFER_INDEX:
dims = 0;
target = GL_TEXTURE_BUFFER;
break;
case TEXTURE_EXTERNAL_INDEX:
default:
/* no-op */
return NULL;
}
/* create texture object */
texObj = ctx->Driver.NewTextureObject(ctx, 0, target);
if (!texObj)
return NULL;
assert(texObj->RefCount == 1);
texObj->Sampler.MinFilter = GL_NEAREST;
texObj->Sampler.MagFilter = GL_NEAREST;
texFormat = ctx->Driver.ChooseTextureFormat(ctx, target,
GL_RGBA, GL_RGBA,
GL_UNSIGNED_BYTE);
/* need a loop here just for cube maps */
for (face = 0; face < numFaces; face++) {
GLenum faceTarget;
if (target == GL_TEXTURE_CUBE_MAP)
faceTarget = GL_TEXTURE_CUBE_MAP_POSITIVE_X + face;
else
faceTarget = target;
/* initialize level[0] texture image */
texImage = _mesa_get_tex_image(ctx, texObj, faceTarget, 0);
_mesa_init_teximage_fields(ctx, texImage,
width,
(dims > 1) ? height : 1,
(dims > 2) ? depth : 1,
0, /* border */
GL_RGBA, texFormat);
ctx->Driver.TexImage(ctx, dims, texImage,
GL_RGBA, GL_UNSIGNED_BYTE, texel,
&ctx->DefaultPacking);
}
_mesa_test_texobj_completeness(ctx, texObj);
assert(texObj->_BaseComplete);
assert(texObj->_MipmapComplete);
ctx->Shared->FallbackTex[tex] = texObj;
}
return ctx->Shared->FallbackTex[tex];
}
static __DRIimage *
dri2_create_from_texture(__DRIcontext *context, int target, unsigned texture,
int depth, int level, unsigned *error,
void *loaderPrivate)
{
__DRIimage *img;
struct gl_context *ctx = ((struct st_context *)dri_context(context)->st)->ctx;
struct gl_texture_object *obj;
struct pipe_resource *tex;
GLuint face = 0;
obj = _mesa_lookup_texture(ctx, texture);
if (!obj || obj->Target != target) {
*error = __DRI_IMAGE_ERROR_BAD_PARAMETER;
return NULL;
}
tex = st_get_texobj_resource(obj);
if (!tex) {
*error = __DRI_IMAGE_ERROR_BAD_PARAMETER;
return NULL;
}
if (target == GL_TEXTURE_CUBE_MAP)
face = depth;
_mesa_test_texobj_completeness(ctx, obj);
if (!obj->_BaseComplete || (level > 0 && !obj->_MipmapComplete)) {
*error = __DRI_IMAGE_ERROR_BAD_PARAMETER;
return NULL;
}
if (level < obj->BaseLevel || level > obj->_MaxLevel) {
*error = __DRI_IMAGE_ERROR_BAD_MATCH;
return NULL;
}
if (target == GL_TEXTURE_3D && obj->Image[face][level]->Depth < depth) {
*error = __DRI_IMAGE_ERROR_BAD_MATCH;
return NULL;
}
img = CALLOC_STRUCT(__DRIimageRec);
if (!img) {
*error = __DRI_IMAGE_ERROR_BAD_ALLOC;
return NULL;
}
img->level = level;
img->layer = depth;
img->dri_format = driGLFormatToImageFormat(obj->Image[face][level]->TexFormat);
img->loader_private = loaderPrivate;
if (img->dri_format == __DRI_IMAGE_FORMAT_NONE) {
*error = __DRI_IMAGE_ERROR_BAD_PARAMETER;
free(img);
return NULL;
}
pipe_resource_reference(&img->texture, tex);
*error = __DRI_IMAGE_ERROR_SUCCESS;
return img;
}
/**
* Prepare the source or destination resource, including:
* - Error checking
* - Creating texture wrappers for renderbuffers
* \param name the texture or renderbuffer name
* \param target GL_TEXTURE target or GL_RENDERBUFFER. For the later, will
* be changed to a compatible GL_TEXTURE target.
* \param level mipmap level
* \param tex_obj returns a pointer to a texture object
* \param tex_image returns a pointer to a texture image
* \param tmp_tex returns temporary texture object name
* \return true if success, false if error
*/
static bool
prepare_target(struct gl_context *ctx, GLuint name, GLenum *target, int level,
struct gl_texture_object **tex_obj,
struct gl_texture_image **tex_image, GLuint *tmp_tex,
const char *dbg_prefix)
{
if (name == 0) {
_mesa_error(ctx, GL_INVALID_VALUE,
"glCopyImageSubData(%sName = %d)", dbg_prefix, name);
return false;
}
/*
* INVALID_ENUM is generated
* * if either <srcTarget> or <dstTarget>
* - is not RENDERBUFFER or a valid non-proxy texture target
* - is TEXTURE_BUFFER, or
* - is one of the cubemap face selectors described in table 3.17,
*/
switch (*target) {
case GL_RENDERBUFFER:
/* Not a texture target, but valid */
case GL_TEXTURE_1D:
case GL_TEXTURE_1D_ARRAY:
case GL_TEXTURE_2D:
case GL_TEXTURE_3D:
case GL_TEXTURE_CUBE_MAP:
case GL_TEXTURE_RECTANGLE:
case GL_TEXTURE_2D_ARRAY:
case GL_TEXTURE_CUBE_MAP_ARRAY:
case GL_TEXTURE_2D_MULTISAMPLE:
case GL_TEXTURE_2D_MULTISAMPLE_ARRAY:
/* These are all valid */
break;
case GL_TEXTURE_EXTERNAL_OES:
/* Only exists in ES */
case GL_TEXTURE_BUFFER:
default:
_mesa_error(ctx, GL_INVALID_ENUM,
"glCopyImageSubData(%sTarget = %s)", dbg_prefix,
_mesa_lookup_enum_by_nr(*target));
return false;
}
if (*target == GL_RENDERBUFFER) {
struct gl_renderbuffer *rb = _mesa_lookup_renderbuffer(ctx, name);
if (!rb) {
_mesa_error(ctx, GL_INVALID_VALUE,
"glCopyImageSubData(%sName = %u)", dbg_prefix, name);
return false;
}
if (!rb->Name) {
_mesa_error(ctx, GL_INVALID_OPERATION,
"glCopyImageSubData(%sName incomplete)", dbg_prefix);
return false;
}
if (level != 0) {
_mesa_error(ctx, GL_INVALID_VALUE,
"glCopyImageSubData(%sLevel = %u)", dbg_prefix, level);
return false;
}
if (rb->NumSamples > 1)
*target = GL_TEXTURE_2D_MULTISAMPLE;
else
*target = GL_TEXTURE_2D;
*tmp_tex = 0;
_mesa_GenTextures(1, tmp_tex);
if (*tmp_tex == 0)
return false; /* Error already set by GenTextures */
_mesa_BindTexture(*target, *tmp_tex);
*tex_obj = _mesa_lookup_texture(ctx, *tmp_tex);
*tex_image = _mesa_get_tex_image(ctx, *tex_obj, *target, 0);
if (!ctx->Driver.BindRenderbufferTexImage(ctx, rb, *tex_image)) {
_mesa_problem(ctx, "Failed to create texture from renderbuffer");
return false;
}
if (ctx->Driver.FinishRenderTexture && !rb->NeedsFinishRenderTexture) {
rb->NeedsFinishRenderTexture = true;
ctx->Driver.FinishRenderTexture(ctx, rb);
}
} else {
*tex_obj = _mesa_lookup_texture(ctx, name);
if (!*tex_obj) {
_mesa_error(ctx, GL_INVALID_VALUE,
"glCopyImageSubData(%sName = %u)", dbg_prefix, name);
return false;
}
_mesa_test_texobj_completeness(ctx, *tex_obj);
if (!(*tex_obj)->_BaseComplete ||
(level != 0 && !(*tex_obj)->_MipmapComplete)) {
_mesa_error(ctx, GL_INVALID_OPERATION,
"glCopyImageSubData(%sName incomplete)", dbg_prefix);
return false;
}
if ((*tex_obj)->Target != *target) {
_mesa_error(ctx, GL_INVALID_ENUM,
"glCopyImageSubData(%sTarget = %s)", dbg_prefix,
_mesa_lookup_enum_by_nr(*target));
return false;
}
if (level < 0 || level >= MAX_TEXTURE_LEVELS) {
_mesa_error(ctx, GL_INVALID_VALUE,
"glCopyImageSubData(%sLevel = %d)", dbg_prefix, level);
return false;
}
*tex_image = _mesa_select_tex_image(*tex_obj, *target, level);
if (!*tex_image) {
_mesa_error(ctx, GL_INVALID_VALUE,
"glCopyImageSubData(%sLevel = %u)", dbg_prefix, level);
return false;
}
}
return true;
}
static void
update_ff_texture_state(struct gl_context *ctx,
BITSET_WORD *enabled_texture_units)
{
int unit;
for (unit = 0; unit < ctx->Const.MaxTextureUnits; unit++) {
struct gl_texture_unit *texUnit = &ctx->Texture.Unit[unit];
GLbitfield mask;
bool complete;
if (texUnit->Enabled == 0x0)
continue;
/* If a shader already dictated what texture target was used for this
* unit, just go along with it.
*/
if (BITSET_TEST(enabled_texture_units, unit))
continue;
/* From the GL 4.4 compat specification, section 16.2 ("Texture Application"):
*
* "Texturing is enabled or disabled using the generic Enable and
* Disable commands, respectively, with the symbolic constants
* TEXTURE_1D, TEXTURE_2D, TEXTURE_RECTANGLE, TEXTURE_3D, or
* TEXTURE_CUBE_MAP to enable the one-, two-, rectangular,
* three-dimensional, or cube map texture, respectively. If more
* than one of these textures is enabled, the first one enabled
* from the following list is used:
*
* • cube map texture
* • three-dimensional texture
* • rectangular texture
* • two-dimensional texture
* • one-dimensional texture"
*
* Note that the TEXTURE_x_INDEX values are in high to low priority.
* Also:
*
* "If a texture unit is disabled or has an invalid or incomplete
* texture (as defined in section 8.17) bound to it, then blending
* is disabled for that texture unit. If the texture environment
* for a given enabled texture unit references a disabled texture
* unit, or an invalid or incomplete texture that is bound to
* another unit, then the results of texture blending are
* undefined."
*/
complete = false;
mask = texUnit->Enabled;
while (mask) {
const int texIndex = u_bit_scan(&mask);
struct gl_texture_object *texObj = texUnit->CurrentTex[texIndex];
struct gl_sampler_object *sampler = texUnit->Sampler ?
texUnit->Sampler : &texObj->Sampler;
if (!_mesa_is_texture_complete(texObj, sampler)) {
_mesa_test_texobj_completeness(ctx, texObj);
}
if (_mesa_is_texture_complete(texObj, sampler)) {
_mesa_reference_texobj(&texUnit->_Current, texObj);
complete = true;
break;
}
}
if (!complete)
continue;
/* if we get here, we know this texture unit is enabled */
BITSET_SET(enabled_texture_units, unit);
ctx->Texture._MaxEnabledTexImageUnit =
MAX2(ctx->Texture._MaxEnabledTexImageUnit, (int)unit);
ctx->Texture._EnabledCoordUnits |= 1 << unit;
update_tex_combine(ctx, texUnit);
}
}
/* Note: This routine refers to derived texture matrix values to
* compute the ENABLE_TEXMAT flags, but is only called on
* _NEW_TEXTURE. On changes to _NEW_TEXTURE_MATRIX, the ENABLE_TEXMAT
* flags are updated by _mesa_update_texture_matrices, above.
*
* If both TEXTURE and TEXTURE_MATRIX change at once, these values
* will be computed twice.
*/
static void
update_texture_state( GLcontext *ctx )
{
GLuint i;
ctx->Texture._ReallyEnabled = 0;
ctx->Texture._GenFlags = 0;
ctx->_NeedNormals &= ~NEED_NORMALS_TEXGEN;
ctx->_NeedEyeCoords &= ~NEED_EYE_TEXGEN;
ctx->Texture._TexMatEnabled = 0;
ctx->Texture._TexGenEnabled = 0;
/* Update texture unit state.
*/
for (i=0; i < ctx->Const.MaxTextureUnits; i++) {
struct gl_texture_unit *texUnit = &ctx->Texture.Unit[i];
texUnit->_ReallyEnabled = 0;
texUnit->_GenFlags = 0;
if (!texUnit->Enabled)
continue;
/* Find the texture of highest dimensionality that is enabled
* and complete. We'll use it for texturing.
*/
if (texUnit->Enabled & TEXTURE0_CUBE) {
struct gl_texture_object *texObj = texUnit->CurrentCubeMap;
if (!texObj->Complete) {
_mesa_test_texobj_completeness(ctx, texObj);
}
if (texObj->Complete) {
texUnit->_ReallyEnabled = TEXTURE0_CUBE;
texUnit->_Current = texObj;
}
}
if (!texUnit->_ReallyEnabled && (texUnit->Enabled & TEXTURE0_3D)) {
struct gl_texture_object *texObj = texUnit->Current3D;
if (!texObj->Complete) {
_mesa_test_texobj_completeness(ctx, texObj);
}
if (texObj->Complete) {
texUnit->_ReallyEnabled = TEXTURE0_3D;
texUnit->_Current = texObj;
}
}
if (!texUnit->_ReallyEnabled && (texUnit->Enabled & TEXTURE0_RECT)) {
struct gl_texture_object *texObj = texUnit->CurrentRect;
if (!texObj->Complete) {
_mesa_test_texobj_completeness(ctx, texObj);
}
if (texObj->Complete) {
texUnit->_ReallyEnabled = TEXTURE0_RECT;
texUnit->_Current = texObj;
}
}
if (!texUnit->_ReallyEnabled && (texUnit->Enabled & TEXTURE0_2D)) {
struct gl_texture_object *texObj = texUnit->Current2D;
if (!texObj->Complete) {
_mesa_test_texobj_completeness(ctx, texObj);
}
if (texObj->Complete) {
texUnit->_ReallyEnabled = TEXTURE0_2D;
texUnit->_Current = texObj;
}
}
if (!texUnit->_ReallyEnabled && (texUnit->Enabled & TEXTURE0_1D)) {
struct gl_texture_object *texObj = texUnit->Current1D;
if (!texObj->Complete) {
_mesa_test_texobj_completeness(ctx, texObj);
}
if (texObj->Complete) {
texUnit->_ReallyEnabled = TEXTURE0_1D;
texUnit->_Current = texObj;
}
}
if (!texUnit->_ReallyEnabled) {
texUnit->_Current = NULL;
continue;
}
{
GLuint flag = texUnit->_ReallyEnabled << (i * NUM_TEXTURE_TARGETS);
ctx->Texture._ReallyEnabled |= flag;
}
if (texUnit->TexGenEnabled) {
if (texUnit->TexGenEnabled & S_BIT) {
texUnit->_GenFlags |= texUnit->_GenBitS;
}
if (texUnit->TexGenEnabled & T_BIT) {
texUnit->_GenFlags |= texUnit->_GenBitT;
}
if (texUnit->TexGenEnabled & Q_BIT) {
texUnit->_GenFlags |= texUnit->_GenBitQ;
}
if (texUnit->TexGenEnabled & R_BIT) {
texUnit->_GenFlags |= texUnit->_GenBitR;
}
ctx->Texture._TexGenEnabled |= ENABLE_TEXGEN(i);
ctx->Texture._GenFlags |= texUnit->_GenFlags;
}
if (ctx->TextureMatrix[i].type != MATRIX_IDENTITY)
ctx->Texture._TexMatEnabled |= ENABLE_TEXMAT(i);
}
if (ctx->Texture._GenFlags & TEXGEN_NEED_NORMALS) {
ctx->_NeedNormals |= NEED_NORMALS_TEXGEN;
ctx->_NeedEyeCoords |= NEED_EYE_TEXGEN;
}
if (ctx->Texture._GenFlags & TEXGEN_NEED_EYE_COORD) {
ctx->_NeedEyeCoords |= NEED_EYE_TEXGEN;
}
}
/**
* \note This routine refers to derived texture matrix values to
* compute the ENABLE_TEXMAT flags, but is only called on
* _NEW_TEXTURE. On changes to _NEW_TEXTURE_MATRIX, the ENABLE_TEXMAT
* flags are updated by _mesa_update_texture_matrices, above.
*
* \param ctx GL context.
*/
static void
update_texture_state( GLcontext *ctx )
{
GLuint unit;
struct gl_fragment_program *fprog = NULL;
struct gl_vertex_program *vprog = NULL;
GLbitfield enabledFragUnits = 0x0;
if (ctx->Shader.CurrentProgram &&
ctx->Shader.CurrentProgram->LinkStatus) {
fprog = ctx->Shader.CurrentProgram->FragmentProgram;
vprog = ctx->Shader.CurrentProgram->VertexProgram;
}
else {
if (ctx->FragmentProgram._Enabled) {
fprog = ctx->FragmentProgram.Current;
}
if (ctx->VertexProgram._Enabled) {
/* XXX enable this if/when non-shader vertex programs get
* texture fetches:
vprog = ctx->VertexProgram.Current;
*/
}
}
/* TODO: only set this if there are actual changes */
ctx->NewState |= _NEW_TEXTURE;
ctx->Texture._EnabledUnits = 0x0;
ctx->Texture._GenFlags = 0x0;
ctx->Texture._TexMatEnabled = 0x0;
ctx->Texture._TexGenEnabled = 0x0;
/*
* Update texture unit state.
*/
for (unit = 0; unit < ctx->Const.MaxTextureImageUnits; unit++) {
struct gl_texture_unit *texUnit = &ctx->Texture.Unit[unit];
GLbitfield enabledVertTargets = 0x0;
GLbitfield enabledFragTargets = 0x0;
GLbitfield enabledTargets = 0x0;
GLuint texIndex;
/* Get the bitmask of texture target enables.
* enableBits will be a mask of the TEXTURE_*_BIT flags indicating
* which texture targets are enabled (fixed function) or referenced
* by a fragment shader/program. When multiple flags are set, we'll
* settle on the one with highest priority (see below).
*/
if (vprog) {
enabledVertTargets |= vprog->Base.TexturesUsed[unit];
}
if (fprog) {
enabledFragTargets |= fprog->Base.TexturesUsed[unit];
}
else {
/* fixed-function fragment program */
enabledFragTargets |= texUnit->Enabled;
}
enabledTargets = enabledVertTargets | enabledFragTargets;
texUnit->_ReallyEnabled = 0x0;
if (enabledTargets == 0x0) {
/* neither vertex nor fragment processing uses this unit */
continue;
}
/* Look for the highest priority texture target that's enabled (or used
* by the vert/frag shaders) and "complete". That's the one we'll use
* for texturing. If we're using vert/frag program we're guaranteed
* that bitcount(enabledBits) <= 1.
* Note that the TEXTURE_x_INDEX values are in high to low priority.
*/
for (texIndex = 0; texIndex < NUM_TEXTURE_TARGETS; texIndex++) {
if (enabledTargets & (1 << texIndex)) {
struct gl_texture_object *texObj = texUnit->CurrentTex[texIndex];
if (!texObj->_Complete) {
_mesa_test_texobj_completeness(ctx, texObj);
}
if (texObj->_Complete) {
texUnit->_ReallyEnabled = 1 << texIndex;
_mesa_reference_texobj(&texUnit->_Current, texObj);
break;
}
}
}
if (!texUnit->_ReallyEnabled) {
if (fprog) {
/* If we get here it means the shader is expecting a texture
* object, but there isn't one (or it's incomplete). Use the
* fallback texture.
*/
struct gl_texture_object *texObj = _mesa_get_fallback_texture(ctx);
texUnit->_ReallyEnabled = 1 << TEXTURE_2D_INDEX;
_mesa_reference_texobj(&texUnit->_Current, texObj);
}
else {
/* fixed-function: texture unit is really disabled */
continue;
}
}
/* if we get here, we know this texture unit is enabled */
ctx->Texture._EnabledUnits |= (1 << unit);
if (enabledFragTargets)
enabledFragUnits |= (1 << unit);
update_tex_combine(ctx, texUnit);
}
/* Determine which texture coordinate sets are actually needed */
if (fprog) {
const GLuint coordMask = (1 << MAX_TEXTURE_COORD_UNITS) - 1;
ctx->Texture._EnabledCoordUnits
= (fprog->Base.InputsRead >> FRAG_ATTRIB_TEX0) & coordMask;
}
else {
/**
* \note This routine refers to derived texture matrix values to
* compute the ENABLE_TEXMAT flags, but is only called on
* _NEW_TEXTURE. On changes to _NEW_TEXTURE_MATRIX, the ENABLE_TEXMAT
* flags are updated by _mesa_update_texture_matrices, above.
*
* \param ctx GL context.
*/
static void
update_texture_state( struct gl_context *ctx )
{
GLuint unit;
struct gl_program *fprog = NULL;
struct gl_program *vprog = NULL;
struct gl_program *gprog = NULL;
GLbitfield enabledFragUnits = 0x0;
if (ctx->Shader.CurrentVertexProgram &&
ctx->Shader.CurrentVertexProgram->LinkStatus) {
vprog = ctx->Shader.CurrentVertexProgram->_LinkedShaders[MESA_SHADER_VERTEX]->Program;
}
if (ctx->Shader.CurrentGeometryProgram &&
ctx->Shader.CurrentGeometryProgram->LinkStatus) {
gprog = ctx->Shader.CurrentGeometryProgram->_LinkedShaders[MESA_SHADER_GEOMETRY]->Program;
}
if (ctx->Shader.CurrentFragmentProgram &&
ctx->Shader.CurrentFragmentProgram->LinkStatus) {
fprog = ctx->Shader.CurrentFragmentProgram->_LinkedShaders[MESA_SHADER_FRAGMENT]->Program;
}
else if (ctx->FragmentProgram._Enabled) {
fprog = &ctx->FragmentProgram.Current->Base;
}
/* TODO: only set this if there are actual changes */
ctx->NewState |= _NEW_TEXTURE;
ctx->Texture._EnabledUnits = 0x0;
ctx->Texture._GenFlags = 0x0;
ctx->Texture._TexMatEnabled = 0x0;
ctx->Texture._TexGenEnabled = 0x0;
/*
* Update texture unit state.
*/
for (unit = 0; unit < ctx->Const.MaxCombinedTextureImageUnits; unit++) {
struct gl_texture_unit *texUnit = &ctx->Texture.Unit[unit];
GLbitfield enabledVertTargets = 0x0;
GLbitfield enabledFragTargets = 0x0;
GLbitfield enabledGeomTargets = 0x0;
GLbitfield enabledTargets = 0x0;
GLuint texIndex;
/* Get the bitmask of texture target enables.
* enableBits will be a mask of the TEXTURE_*_BIT flags indicating
* which texture targets are enabled (fixed function) or referenced
* by a fragment program/program. When multiple flags are set, we'll
* settle on the one with highest priority (see below).
*/
if (vprog) {
enabledVertTargets |= vprog->TexturesUsed[unit];
}
if (gprog) {
enabledGeomTargets |= gprog->TexturesUsed[unit];
}
if (fprog) {
enabledFragTargets |= fprog->TexturesUsed[unit];
}
else {
/* fixed-function fragment program */
enabledFragTargets |= texUnit->Enabled;
}
enabledTargets = enabledVertTargets | enabledFragTargets |
enabledGeomTargets;
texUnit->_ReallyEnabled = 0x0;
if (enabledTargets == 0x0) {
/* neither vertex nor fragment processing uses this unit */
continue;
}
/* Look for the highest priority texture target that's enabled (or used
* by the vert/frag shaders) and "complete". That's the one we'll use
* for texturing.
*
* Note that the TEXTURE_x_INDEX values are in high to low priority.
*/
for (texIndex = 0; texIndex < NUM_TEXTURE_TARGETS; texIndex++) {
if (enabledTargets & (1 << texIndex)) {
struct gl_texture_object *texObj = texUnit->CurrentTex[texIndex];
struct gl_sampler_object *sampler = texUnit->Sampler ?
texUnit->Sampler : &texObj->Sampler;
if (!_mesa_is_texture_complete(texObj, sampler)) {
_mesa_test_texobj_completeness(ctx, texObj);
}
if (_mesa_is_texture_complete(texObj, sampler)) {
texUnit->_ReallyEnabled = 1 << texIndex;
_mesa_reference_texobj(&texUnit->_Current, texObj);
break;
}
}
}
if (!texUnit->_ReallyEnabled) {
if (fprog) {
/* If we get here it means the shader is expecting a texture
* object, but there isn't one (or it's incomplete). Use the
* fallback texture.
*/
struct gl_texture_object *texObj;
gl_texture_index texTarget;
texTarget = (gl_texture_index) (ffs(enabledTargets) - 1);
texObj = _mesa_get_fallback_texture(ctx, texTarget);
assert(texObj);
if (!texObj) {
/* invalid fallback texture: don't enable the texture unit */
continue;
}
_mesa_reference_texobj(&texUnit->_Current, texObj);
texUnit->_ReallyEnabled = 1 << texTarget;
}
else {
/* fixed-function: texture unit is really disabled */
continue;
}
}
/* if we get here, we know this texture unit is enabled */
ctx->Texture._EnabledUnits |= (1 << unit);
if (enabledFragTargets)
enabledFragUnits |= (1 << unit);
if (!fprog)
update_tex_combine(ctx, texUnit);
}
/* Determine which texture coordinate sets are actually needed */
if (fprog) {
const GLuint coordMask = (1 << MAX_TEXTURE_COORD_UNITS) - 1;
ctx->Texture._EnabledCoordUnits
= (fprog->InputsRead >> VARYING_SLOT_TEX0) & coordMask;
}
else {
/**
* Prepare the source or destination resource. This involves error
* checking and returning the relevant gl_texture_image or gl_renderbuffer.
* Note that one of the resulting tex_image or renderbuffer pointers will be
* NULL and the other will be non-null.
*
* \param name the texture or renderbuffer name
* \param target One of GL_TEXTURE_x target or GL_RENDERBUFFER
* \param level mipmap level
* \param z src or dest Z
* \param depth number of slices/faces/layers to copy
* \param tex_image returns a pointer to a texture image
* \param renderbuffer returns a pointer to a renderbuffer
* \return true if success, false if error
*/
static bool
prepare_target(struct gl_context *ctx, GLuint name, GLenum target,
int level, int z, int depth,
struct gl_texture_image **tex_image,
struct gl_renderbuffer **renderbuffer,
mesa_format *format,
GLenum *internalFormat,
GLuint *width,
GLuint *height,
GLuint *num_samples,
const char *dbg_prefix)
{
if (name == 0) {
_mesa_error(ctx, GL_INVALID_VALUE,
"glCopyImageSubData(%sName = %d)", dbg_prefix, name);
return false;
}
/*
* INVALID_ENUM is generated
* * if either <srcTarget> or <dstTarget>
* - is not RENDERBUFFER or a valid non-proxy texture target
* - is TEXTURE_BUFFER, or
* - is one of the cubemap face selectors described in table 3.17,
*/
switch (target) {
case GL_RENDERBUFFER:
/* Not a texture target, but valid */
case GL_TEXTURE_1D:
case GL_TEXTURE_1D_ARRAY:
case GL_TEXTURE_2D:
case GL_TEXTURE_3D:
case GL_TEXTURE_CUBE_MAP:
case GL_TEXTURE_RECTANGLE:
case GL_TEXTURE_2D_ARRAY:
case GL_TEXTURE_CUBE_MAP_ARRAY:
case GL_TEXTURE_2D_MULTISAMPLE:
case GL_TEXTURE_2D_MULTISAMPLE_ARRAY:
/* These are all valid */
break;
case GL_TEXTURE_EXTERNAL_OES:
/* Only exists in ES */
case GL_TEXTURE_BUFFER:
default:
_mesa_error(ctx, GL_INVALID_ENUM,
"glCopyImageSubData(%sTarget = %s)", dbg_prefix,
_mesa_enum_to_string(target));
return false;
}
if (target == GL_RENDERBUFFER) {
struct gl_renderbuffer *rb = _mesa_lookup_renderbuffer(ctx, name);
if (!rb) {
_mesa_error(ctx, GL_INVALID_VALUE,
"glCopyImageSubData(%sName = %u)", dbg_prefix, name);
return false;
}
if (!rb->Name) {
_mesa_error(ctx, GL_INVALID_OPERATION,
"glCopyImageSubData(%sName incomplete)", dbg_prefix);
return false;
}
if (level != 0) {
_mesa_error(ctx, GL_INVALID_VALUE,
"glCopyImageSubData(%sLevel = %u)", dbg_prefix, level);
return false;
}
*renderbuffer = rb;
*format = rb->Format;
*internalFormat = rb->InternalFormat;
*width = rb->Width;
*height = rb->Height;
*num_samples = rb->NumSamples;
*tex_image = NULL;
} else {
struct gl_texture_object *texObj = _mesa_lookup_texture(ctx, name);
if (!texObj) {
/*
* From GL_ARB_copy_image specification:
* "INVALID_VALUE is generated if either <srcName> or <dstName> does
* not correspond to a valid renderbuffer or texture object according
* to the corresponding target parameter."
*/
_mesa_error(ctx, GL_INVALID_VALUE,
"glCopyImageSubData(%sName = %u)", dbg_prefix, name);
return false;
}
_mesa_test_texobj_completeness(ctx, texObj);
if (!texObj->_BaseComplete ||
(level != 0 && !texObj->_MipmapComplete)) {
_mesa_error(ctx, GL_INVALID_OPERATION,
"glCopyImageSubData(%sName incomplete)", dbg_prefix);
return false;
}
/* Note that target will not be a cube face name */
if (texObj->Target != target) {
/*
* From GL_ARB_copy_image_specification:
* "INVALID_ENUM is generated if the target does not match the type
* of the object."
*/
_mesa_error(ctx, GL_INVALID_ENUM,
"glCopyImageSubData(%sTarget = %s)", dbg_prefix,
_mesa_enum_to_string(target));
return false;
}
if (level < 0 || level >= MAX_TEXTURE_LEVELS) {
_mesa_error(ctx, GL_INVALID_VALUE,
"glCopyImageSubData(%sLevel = %d)", dbg_prefix, level);
return false;
}
if (target == GL_TEXTURE_CUBE_MAP) {
int i;
assert(z < MAX_FACES); /* should have been caught earlier */
/* make sure all the cube faces are present */
for (i = 0; i < depth; i++) {
if (!texObj->Image[z+i][level]) {
/* missing cube face */
_mesa_error(ctx, GL_INVALID_VALUE,
"glCopyImageSubData(missing cube face)");
return false;
}
}
*tex_image = texObj->Image[z][level];
}
else {
*tex_image = _mesa_select_tex_image(texObj, target, level);
}
if (!*tex_image) {
_mesa_error(ctx, GL_INVALID_VALUE,
"glCopyImageSubData(%sLevel = %u)", dbg_prefix, level);
return false;
}
*renderbuffer = NULL;
*format = (*tex_image)->TexFormat;
*internalFormat = (*tex_image)->InternalFormat;
*width = (*tex_image)->Width;
*height = (*tex_image)->Height;
*num_samples = (*tex_image)->NumSamples;
}
return true;
}
