static void
delete_samplers(struct gl_context *ctx, GLsizei count, const GLuint *samplers)
{
FLUSH_VERTICES(ctx, 0);
_mesa_HashLockMutex(ctx->Shared->SamplerObjects);
for (GLsizei i = 0; i < count; i++) {
if (samplers[i]) {
GLuint j;
struct gl_sampler_object *sampObj =
lookup_samplerobj_locked(ctx, samplers[i]);
if (sampObj) {
/* If the sampler is currently bound, unbind it. */
for (j = 0; j < ctx->Const.MaxCombinedTextureImageUnits; j++) {
if (ctx->Texture.Unit[j].Sampler == sampObj) {
FLUSH_VERTICES(ctx, _NEW_TEXTURE_OBJECT);
_mesa_reference_sampler_object(ctx, &ctx->Texture.Unit[j].Sampler, NULL);
}
}
/* The ID is immediately freed for re-use */
_mesa_HashRemoveLocked(ctx->Shared->SamplerObjects, samplers[i]);
/* But the object exists until its reference count goes to zero */
_mesa_reference_sampler_object(ctx, &sampObj, NULL);
}
}
}
_mesa_HashUnlockMutex(ctx->Shared->SamplerObjects);
}
/**
* Free dynamically-allocted texture data attached to the given context.
*/
void
_mesa_free_texture_data(struct gl_context *ctx)
{
GLuint u, tgt;
/* unreference current textures */
for (u = 0; u < ARRAY_SIZE(ctx->Texture.Unit); u++) {
/* The _Current texture could account for another reference */
_mesa_reference_texobj(&ctx->Texture.Unit[u]._Current, NULL);
for (tgt = 0; tgt < NUM_TEXTURE_TARGETS; tgt++) {
_mesa_reference_texobj(&ctx->Texture.Unit[u].CurrentTex[tgt], NULL);
}
}
/* Free proxy texture objects */
for (tgt = 0; tgt < NUM_TEXTURE_TARGETS; tgt++)
ctx->Driver.DeleteTexture(ctx, ctx->Texture.ProxyTex[tgt]);
/* GL_ARB_texture_buffer_object */
_mesa_reference_buffer_object(ctx, &ctx->Texture.BufferObject, NULL);
for (u = 0; u < ARRAY_SIZE(ctx->Texture.Unit); u++) {
_mesa_reference_sampler_object(ctx, &ctx->Texture.Unit[u].Sampler, NULL);
}
}
void GLAPIENTRY
_mesa_BindSampler(GLuint unit, GLuint sampler)
{
struct gl_sampler_object *sampObj;
GET_CURRENT_CONTEXT(ctx);
if (unit >= ctx->Const.MaxCombinedTextureImageUnits) {
_mesa_error(ctx, GL_INVALID_VALUE, "glBindSampler(unit %u)", unit);
return;
}
if (sampler == 0) {
/* Use the default sampler object, the one contained in the texture
* object.
*/
sampObj = NULL;
}
else {
/* user-defined sampler object */
sampObj = _mesa_lookup_samplerobj(ctx, sampler);
if (!sampObj) {
_mesa_error(ctx, GL_INVALID_OPERATION, "glBindSampler(sampler)");
return;
}
}
if (ctx->Texture.Unit[unit].Sampler != sampObj) {
FLUSH_VERTICES(ctx, _NEW_TEXTURE);
}
/* bind new sampler */
_mesa_reference_sampler_object(ctx, &ctx->Texture.Unit[unit].Sampler,
sampObj);
}
void
_mesa_bind_sampler(struct gl_context *ctx, GLuint unit,
struct gl_sampler_object *sampObj)
{
if (ctx->Texture.Unit[unit].Sampler != sampObj) {
FLUSH_VERTICES(ctx, _NEW_TEXTURE_OBJECT);
}
_mesa_reference_sampler_object(ctx, &ctx->Texture.Unit[unit].Sampler,
sampObj);
}
void GLAPIENTRY
_mesa_DeleteSamplers(GLsizei count, const GLuint *samplers)
{
GET_CURRENT_CONTEXT(ctx);
GLsizei i;
FLUSH_VERTICES(ctx, 0);
if (count < 0) {
_mesa_error(ctx, GL_INVALID_VALUE, "glDeleteSamplers(count)");
return;
}
mtx_lock(&ctx->Shared->Mutex);
for (i = 0; i < count; i++) {
if (samplers[i]) {
GLuint j;
struct gl_sampler_object *sampObj =
_mesa_lookup_samplerobj(ctx, samplers[i]);
if (sampObj) {
/* If the sampler is currently bound, unbind it. */
for (j = 0; j < ctx->Const.MaxCombinedTextureImageUnits; j++) {
if (ctx->Texture.Unit[j].Sampler == sampObj) {
FLUSH_VERTICES(ctx, _NEW_TEXTURE);
_mesa_reference_sampler_object(ctx, &ctx->Texture.Unit[j].Sampler, NULL);
}
}
/* The ID is immediately freed for re-use */
_mesa_HashRemove(ctx->Shared->SamplerObjects, samplers[i]);
/* But the object exists until its reference count goes to zero */
_mesa_reference_sampler_object(ctx, &sampObj, NULL);
}
}
}
mtx_unlock(&ctx->Shared->Mutex);
}
void
_mesa_meta_glsl_generate_mipmap_cleanup(struct gl_context *ctx,
struct gen_mipmap_state *mipmap)
{
if (mipmap->VAO == 0)
return;
_mesa_DeleteVertexArrays(1, &mipmap->VAO);
mipmap->VAO = 0;
_mesa_reference_buffer_object(ctx, &mipmap->buf_obj, NULL);
_mesa_reference_sampler_object(ctx, &mipmap->samp_obj, NULL);
_mesa_reference_framebuffer(&mipmap->fb, NULL);
_mesa_meta_blit_shader_table_cleanup(ctx, &mipmap->shaders);
}
void
_mesa_meta_fb_tex_blit_end(struct gl_context *ctx, GLenum target,
struct fb_tex_blit_state *blit)
{
struct gl_texture_object *const texObj =
_mesa_get_current_tex_object(ctx, target);
/* Restore texture object state, the texture binding will
* be restored by _mesa_meta_end().
*/
if (target != GL_TEXTURE_RECTANGLE_ARB) {
_mesa_texture_parameteriv(ctx, texObj, GL_TEXTURE_BASE_LEVEL,
&blit->baseLevelSave, false);
_mesa_texture_parameteriv(ctx, texObj, GL_TEXTURE_MAX_LEVEL,
&blit->maxLevelSave, false);
}
/* If ARB_stencil_texturing is not supported, the mode won't have changed. */
if (texObj->StencilSampling != blit->stencilSamplingSave) {
/* GLint so the compiler won't complain about type signedness mismatch
* in the call to _mesa_texture_parameteriv below.
*/
const GLint param = blit->stencilSamplingSave ?
GL_STENCIL_INDEX : GL_DEPTH_COMPONENT;
_mesa_texture_parameteriv(ctx, texObj, GL_DEPTH_STENCIL_TEXTURE_MODE,
¶m, false);
}
_mesa_bind_sampler(ctx, ctx->Texture.CurrentUnit, blit->samp_obj_save);
_mesa_reference_sampler_object(ctx, &blit->samp_obj_save, NULL);
_mesa_reference_sampler_object(ctx, &blit->samp_obj, NULL);
if (blit->tempTex)
_mesa_DeleteTextures(1, &blit->tempTex);
}
void
_mesa_meta_fb_tex_blit_begin(struct gl_context *ctx,
struct fb_tex_blit_state *blit)
{
/* None of the existing callers preinitialize fb_tex_blit_state to zeros,
* and both use stack variables. If samp_obj_save is not NULL,
* _mesa_reference_sampler_object will try to dereference it. Leaving
* random garbage in samp_obj_save can only lead to crashes.
*
* Since the state isn't persistent across calls, we won't catch ref
* counting problems.
*/
blit->samp_obj_save = NULL;
_mesa_reference_sampler_object(ctx, &blit->samp_obj_save,
ctx->Texture.Unit[ctx->Texture.CurrentUnit].Sampler);
blit->tempTex = 0;
}
static ALWAYS_INLINE void
bind_samplers(struct gl_context *ctx, GLuint first, GLsizei count,
const GLuint *samplers, bool no_error)
{
GLsizei i;
FLUSH_VERTICES(ctx, 0);
if (samplers) {
/* Note that the error semantics for multi-bind commands differ from
* those of other GL commands.
*
* The Issues section in the ARB_multi_bind spec says:
*
* "(11) Typically, OpenGL specifies that if an error is generated by
* a command, that command has no effect. This is somewhat
* unfortunate for multi-bind commands, because it would require
* a first pass to scan the entire list of bound objects for
* errors and then a second pass to actually perform the
* bindings. Should we have different error semantics?
*
* RESOLVED: Yes. In this specification, when the parameters for
* one of the <count> binding points are invalid, that binding
* point is not updated and an error will be generated. However,
* other binding points in the same command will be updated if
* their parameters are valid and no other error occurs."
*/
_mesa_HashLockMutex(ctx->Shared->SamplerObjects);
for (i = 0; i < count; i++) {
const GLuint unit = first + i;
struct gl_sampler_object * const currentSampler =
ctx->Texture.Unit[unit].Sampler;
struct gl_sampler_object *sampObj;
if (samplers[i] != 0) {
if (currentSampler && currentSampler->Name == samplers[i])
sampObj = currentSampler;
else
sampObj = lookup_samplerobj_locked(ctx, samplers[i]);
/* The ARB_multi_bind spec says:
*
* "An INVALID_OPERATION error is generated if any value
* in <samplers> is not zero or the name of an existing
* sampler object (per binding)."
*/
if (!no_error && !sampObj) {
_mesa_error(ctx, GL_INVALID_OPERATION,
"glBindSamplers(samplers[%d]=%u is not zero or "
"the name of an existing sampler object)",
i, samplers[i]);
continue;
}
} else {
sampObj = NULL;
}
/* Bind the new sampler */
if (sampObj != currentSampler) {
_mesa_reference_sampler_object(ctx,
&ctx->Texture.Unit[unit].Sampler,
sampObj);
ctx->NewState |= _NEW_TEXTURE_OBJECT;
}
}
_mesa_HashUnlockMutex(ctx->Shared->SamplerObjects);
} else {
/* Unbind all samplers in the range <first> through <first>+<count>-1 */
for (i = 0; i < count; i++) {
const GLuint unit = first + i;
if (ctx->Texture.Unit[unit].Sampler) {
_mesa_reference_sampler_object(ctx,
&ctx->Texture.Unit[unit].Sampler,
NULL);
ctx->NewState |= _NEW_TEXTURE_OBJECT;
}
}
}
}
/**
* Called via ctx->Driver.GenerateMipmap()
* Note: We don't yet support 3D textures, or texture borders.
*/
void
_mesa_meta_GenerateMipmap(struct gl_context *ctx, GLenum target,
struct gl_texture_object *texObj)
{
struct gen_mipmap_state *mipmap = &ctx->Meta->Mipmap;
struct vertex verts[4];
const GLuint baseLevel = texObj->BaseLevel;
const GLuint maxLevel = texObj->MaxLevel;
const GLint maxLevelSave = texObj->MaxLevel;
const GLboolean genMipmapSave = texObj->GenerateMipmap;
const GLboolean use_glsl_version = ctx->Extensions.ARB_vertex_shader &&
ctx->Extensions.ARB_fragment_shader;
GLenum faceTarget;
GLuint dstLevel;
struct gl_sampler_object *samp_obj_save = NULL;
GLint swizzle[4];
GLboolean swizzleSaved = GL_FALSE;
/* GLint so the compiler won't complain about type signedness mismatch in
* the calls to _mesa_texture_parameteriv below.
*/
static const GLint always_false = GL_FALSE;
static const GLint always_true = GL_TRUE;
if (fallback_required(ctx, target, texObj)) {
_mesa_generate_mipmap(ctx, target, texObj);
return;
}
if (target >= GL_TEXTURE_CUBE_MAP_POSITIVE_X &&
target <= GL_TEXTURE_CUBE_MAP_NEGATIVE_Z) {
faceTarget = target;
target = GL_TEXTURE_CUBE_MAP;
} else {
faceTarget = target;
}
_mesa_meta_begin(ctx, MESA_META_ALL & ~MESA_META_DRAW_BUFFERS);
_mesa_ColorMask(GL_TRUE, GL_TRUE, GL_TRUE, GL_TRUE);
/* Choose between glsl version and fixed function version of
* GenerateMipmap function.
*/
if (use_glsl_version) {
_mesa_meta_setup_vertex_objects(ctx, &mipmap->VAO, &mipmap->buf_obj, true,
2, 4, 0);
_mesa_meta_setup_blit_shader(ctx, target, false, &mipmap->shaders);
} else {
_mesa_meta_setup_ff_tnl_for_blit(ctx, &mipmap->VAO, &mipmap->buf_obj, 3);
_mesa_set_enable(ctx, target, GL_TRUE);
}
_mesa_reference_sampler_object(ctx, &samp_obj_save,
ctx->Texture.Unit[ctx->Texture.CurrentUnit].Sampler);
/* We may have been called from glGenerateTextureMipmap with CurrentUnit
* still set to 0, so we don't know when we can skip binding the texture.
* Assume that _mesa_BindTexture will be fast if we're rebinding the same
* texture.
*/
_mesa_BindTexture(target, texObj->Name);
if (mipmap->samp_obj == NULL) {
mipmap->samp_obj = ctx->Driver.NewSamplerObject(ctx, 0xDEADBEEF);
if (mipmap->samp_obj == NULL) {
/* This is a bit lazy. Flag out of memory, and then don't bother to
* clean up. Once out of memory is flagged, the only realistic next
* move is to destroy the context. That will trigger all the right
* clean up.
*/
_mesa_error(ctx, GL_OUT_OF_MEMORY, "glGenerateMipmap");
return;
}
_mesa_set_sampler_filters(ctx, mipmap->samp_obj, GL_LINEAR_MIPMAP_LINEAR,
GL_LINEAR);
_mesa_set_sampler_wrap(ctx, mipmap->samp_obj, GL_CLAMP_TO_EDGE,
GL_CLAMP_TO_EDGE, GL_CLAMP_TO_EDGE);
/* We don't want to encode or decode sRGB values; treat them as linear. */
_mesa_set_sampler_srgb_decode(ctx, mipmap->samp_obj, GL_SKIP_DECODE_EXT);
}
_mesa_bind_sampler(ctx, ctx->Texture.CurrentUnit, mipmap->samp_obj);
assert(mipmap->fb != NULL);
_mesa_bind_framebuffers(ctx, mipmap->fb, mipmap->fb);
_mesa_texture_parameteriv(ctx, texObj, GL_GENERATE_MIPMAP, &always_false, false);
if (texObj->_Swizzle != SWIZZLE_NOOP) {
static const GLint swizzleNoop[4] = { GL_RED, GL_GREEN, GL_BLUE, GL_ALPHA };
memcpy(swizzle, texObj->Swizzle, sizeof(swizzle));
swizzleSaved = GL_TRUE;
_mesa_texture_parameteriv(ctx, texObj, GL_TEXTURE_SWIZZLE_RGBA,
swizzleNoop, false);
}
/* Silence valgrind warnings about reading uninitialized stack. */
memset(verts, 0, sizeof(verts));
/* setup vertex positions */
verts[0].x = -1.0F;
verts[0].y = -1.0F;
verts[1].x = 1.0F;
verts[1].y = -1.0F;
verts[2].x = 1.0F;
verts[2].y = 1.0F;
verts[3].x = -1.0F;
verts[3].y = 1.0F;
/* texture is already locked, unlock now */
_mesa_unlock_texture(ctx, texObj);
_mesa_prepare_mipmap_levels(ctx, texObj, baseLevel, maxLevel);
for (dstLevel = baseLevel + 1; dstLevel <= maxLevel; dstLevel++) {
const struct gl_texture_image *srcImage;
struct gl_texture_image *dstImage;
const GLuint srcLevel = dstLevel - 1;
GLuint layer;
GLsizei srcWidth, srcHeight, srcDepth;
GLsizei dstWidth, dstHeight, dstDepth;
srcImage = _mesa_select_tex_image(texObj, faceTarget, srcLevel);
assert(srcImage->Border == 0);
/* src size */
srcWidth = srcImage->Width;
if (target == GL_TEXTURE_1D_ARRAY) {
srcHeight = 1;
srcDepth = srcImage->Height;
} else {
srcHeight = srcImage->Height;
srcDepth = srcImage->Depth;
}
/* new dst size */
dstWidth = minify(srcWidth, 1);
dstHeight = minify(srcHeight, 1);
dstDepth = target == GL_TEXTURE_3D ? minify(srcDepth, 1) : srcDepth;
if (dstWidth == srcWidth &&
dstHeight == srcHeight &&
dstDepth == srcDepth) {
/* all done */
break;
}
/* Allocate storage for the destination mipmap image(s) */
/* Set MaxLevel large enough to hold the new level when we allocate it */
_mesa_texture_parameteriv(ctx, texObj, GL_TEXTURE_MAX_LEVEL,
(GLint *) &dstLevel, false);
dstImage = _mesa_select_tex_image(texObj, faceTarget, dstLevel);
/* All done. We either ran out of memory or we would go beyond the last
* valid level of an immutable texture if we continued.
*/
if (dstImage == NULL)
break;
/* limit minification to src level */
_mesa_texture_parameteriv(ctx, texObj, GL_TEXTURE_MAX_LEVEL,
(GLint *) &srcLevel, false);
/* setup viewport */
_mesa_set_viewport(ctx, 0, 0, 0, dstWidth, dstHeight);
_mesa_DrawBuffer(GL_COLOR_ATTACHMENT0);
for (layer = 0; layer < dstDepth; ++layer) {
/* Setup texture coordinates */
_mesa_meta_setup_texture_coords(faceTarget,
layer,
0, 0, /* xoffset, yoffset */
srcWidth, srcHeight, /* img size */
srcWidth, srcHeight, srcDepth,
verts[0].tex,
verts[1].tex,
verts[2].tex,
verts[3].tex);
/* upload vertex data */
_mesa_buffer_data(ctx, mipmap->buf_obj, GL_NONE, sizeof(verts), verts,
GL_DYNAMIC_DRAW, __func__);
_mesa_meta_framebuffer_texture_image(ctx, ctx->DrawBuffer,
GL_COLOR_ATTACHMENT0, dstImage,
layer);
/* sanity check */
if (_mesa_check_framebuffer_status(ctx, ctx->DrawBuffer) !=
GL_FRAMEBUFFER_COMPLETE) {
_mesa_problem(ctx, "Unexpected incomplete framebuffer in "
"_mesa_meta_GenerateMipmap()");
break;
}
assert(dstWidth == ctx->DrawBuffer->Width);
if (target == GL_TEXTURE_1D_ARRAY) {
assert(dstHeight == 1);
} else {
assert(dstHeight == ctx->DrawBuffer->Height);
}
_mesa_DrawArrays(GL_TRIANGLE_FAN, 0, 4);
}
}
_mesa_lock_texture(ctx, texObj); /* relock */
_mesa_bind_sampler(ctx, ctx->Texture.CurrentUnit, samp_obj_save);
_mesa_reference_sampler_object(ctx, &samp_obj_save, NULL);
_mesa_meta_end(ctx);
_mesa_texture_parameteriv(ctx, texObj, GL_TEXTURE_MAX_LEVEL, &maxLevelSave,
false);
if (genMipmapSave)
_mesa_texture_parameteriv(ctx, texObj, GL_GENERATE_MIPMAP, &always_true,
false);
if (swizzleSaved)
_mesa_texture_parameteriv(ctx, texObj, GL_TEXTURE_SWIZZLE_RGBA, swizzle,
false);
}
void GLAPIENTRY
_mesa_BindSamplers(GLuint first, GLsizei count, const GLuint *samplers)
{
GET_CURRENT_CONTEXT(ctx);
GLint i;
/* The ARB_multi_bind spec says:
*
* "An INVALID_OPERATION error is generated if <first> + <count> is
* greater than the number of texture image units supported by
* the implementation."
*/
if (first + count > ctx->Const.MaxCombinedTextureImageUnits) {
_mesa_error(ctx, GL_INVALID_OPERATION,
"glBindSamplers(first=%u + count=%d > the value of "
"GL_MAX_COMBINED_TEXTURE_IMAGE_UNITS=%u)",
first, count, ctx->Const.MaxCombinedTextureImageUnits);
return;
}
FLUSH_VERTICES(ctx, 0);
if (samplers) {
/* Note that the error semantics for multi-bind commands differ from
* those of other GL commands.
*
* The Issues section in the ARB_multi_bind spec says:
*
* "(11) Typically, OpenGL specifies that if an error is generated by
* a command, that command has no effect. This is somewhat
* unfortunate for multi-bind commands, because it would require
* a first pass to scan the entire list of bound objects for
* errors and then a second pass to actually perform the
* bindings. Should we have different error semantics?
*
* RESOLVED: Yes. In this specification, when the parameters for
* one of the <count> binding points are invalid, that binding
* point is not updated and an error will be generated. However,
* other binding points in the same command will be updated if
* their parameters are valid and no other error occurs."
*/
begin_samplerobj_lookups(ctx);
for (i = 0; i < count; i++) {
const GLuint unit = first + i;
struct gl_sampler_object * const currentSampler =
ctx->Texture.Unit[unit].Sampler;
struct gl_sampler_object *sampObj;
if (samplers[i] != 0) {
if (currentSampler && currentSampler->Name == samplers[i])
sampObj = currentSampler;
else
sampObj = lookup_samplerobj_locked(ctx, samplers[i]);
/* The ARB_multi_bind spec says:
*
* "An INVALID_OPERATION error is generated if any value
* in <samplers> is not zero or the name of an existing
* sampler object (per binding)."
*/
if (!sampObj) {
_mesa_error(ctx, GL_INVALID_OPERATION,
"glBindSamplers(samplers[%d]=%u is not zero or "
"the name of an existing sampler object)",
i, samplers[i]);
continue;
}
} else {
sampObj = NULL;
}
/* Bind the new sampler */
if (sampObj != currentSampler) {
_mesa_reference_sampler_object(ctx,
&ctx->Texture.Unit[unit].Sampler,
sampObj);
ctx->NewState |= _NEW_TEXTURE;
}
}
end_samplerobj_lookups(ctx);
} else {
/* Unbind all samplers in the range <first> through <first>+<count>-1 */
for (i = 0; i < count; i++) {
const GLuint unit = first + i;
if (ctx->Texture.Unit[unit].Sampler) {
_mesa_reference_sampler_object(ctx,
&ctx->Texture.Unit[unit].Sampler,
NULL);
ctx->NewState |= _NEW_TEXTURE;
}
}
}
}
