GLuint
_mesa_meta_setup_sampler(struct gl_context *ctx,
const struct gl_texture_object *texObj,
GLenum target, GLenum filter, GLuint srcLevel)
{
GLuint sampler;
GLenum tex_filter = (filter == GL_SCALED_RESOLVE_FASTEST_EXT ||
filter == GL_SCALED_RESOLVE_NICEST_EXT) ?
GL_NEAREST : filter;
_mesa_GenSamplers(1, &sampler);
_mesa_BindSampler(ctx->Texture.CurrentUnit, sampler);
/* Prepare src texture state */
_mesa_BindTexture(target, texObj->Name);
_mesa_SamplerParameteri(sampler, GL_TEXTURE_MIN_FILTER, tex_filter);
_mesa_SamplerParameteri(sampler, GL_TEXTURE_MAG_FILTER, tex_filter);
if (target != GL_TEXTURE_RECTANGLE_ARB) {
_mesa_TexParameteri(target, GL_TEXTURE_BASE_LEVEL, srcLevel);
_mesa_TexParameteri(target, GL_TEXTURE_MAX_LEVEL, srcLevel);
}
_mesa_SamplerParameteri(sampler, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
_mesa_SamplerParameteri(sampler, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
return sampler;
}
void
_mesa_meta_fb_tex_blit_end(struct gl_context *ctx, GLenum target,
struct fb_tex_blit_state *blit)
{
/* Restore texture object state, the texture binding will
* be restored by _mesa_meta_end().
*/
if (target != GL_TEXTURE_RECTANGLE_ARB) {
_mesa_TexParameteri(target, GL_TEXTURE_BASE_LEVEL, blit->baseLevelSave);
_mesa_TexParameteri(target, GL_TEXTURE_MAX_LEVEL, blit->maxLevelSave);
if (ctx->Extensions.ARB_stencil_texturing) {
const struct gl_texture_object *texObj =
_mesa_get_current_tex_object(ctx, target);
if (texObj->StencilSampling != blit->stencilSamplingSave)
_mesa_TexParameteri(target, GL_DEPTH_STENCIL_TEXTURE_MODE,
blit->stencilSamplingSave ?
GL_STENCIL_INDEX : GL_DEPTH_COMPONENT);
}
}
_mesa_BindSampler(ctx->Texture.CurrentUnit, blit->samplerSave);
_mesa_DeleteSamplers(1, &blit->sampler);
if (blit->tempTex)
_mesa_DeleteTextures(1, &blit->tempTex);
}
/**
* Called via ctx->Driver.GenerateMipmap()
* Note: We don't yet support 3D textures, 1D/2D array 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 GLuint currentTexUnitSave = ctx->Texture.CurrentUnit;
const GLboolean use_glsl_version = ctx->Extensions.ARB_vertex_shader &&
ctx->Extensions.ARB_fragment_shader;
GLenum faceTarget;
GLuint dstLevel;
GLuint samplerSave;
GLint swizzle[4];
GLboolean swizzleSaved = GL_FALSE;
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);
/* Choose between glsl version and fixed function version of
* GenerateMipmap function.
*/
if (use_glsl_version) {
_mesa_meta_setup_vertex_objects(&mipmap->VAO, &mipmap->VBO, true,
2, 4, 0);
_mesa_meta_setup_blit_shader(ctx, target, false, &mipmap->shaders);
} else {
_mesa_meta_setup_ff_tnl_for_blit(&mipmap->VAO, &mipmap->VBO, 3);
_mesa_set_enable(ctx, target, GL_TRUE);
}
samplerSave = ctx->Texture.Unit[ctx->Texture.CurrentUnit].Sampler ?
ctx->Texture.Unit[ctx->Texture.CurrentUnit].Sampler->Name : 0;
if (currentTexUnitSave != 0)
_mesa_BindTexture(target, texObj->Name);
if (!mipmap->Sampler) {
_mesa_GenSamplers(1, &mipmap->Sampler);
_mesa_BindSampler(ctx->Texture.CurrentUnit, mipmap->Sampler);
_mesa_SamplerParameteri(mipmap->Sampler,
GL_TEXTURE_MIN_FILTER,
GL_LINEAR_MIPMAP_LINEAR);
_mesa_SamplerParameteri(mipmap->Sampler, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
_mesa_SamplerParameteri(mipmap->Sampler, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
_mesa_SamplerParameteri(mipmap->Sampler, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
_mesa_SamplerParameteri(mipmap->Sampler, GL_TEXTURE_WRAP_R, GL_CLAMP_TO_EDGE);
/* We don't want to encode or decode sRGB values; treat them as linear.
* This is not technically correct for GLES3 but we don't get any API
* error at the moment.
*/
if (ctx->Extensions.EXT_texture_sRGB_decode) {
_mesa_SamplerParameteri(mipmap->Sampler, GL_TEXTURE_SRGB_DECODE_EXT,
GL_SKIP_DECODE_EXT);
}
} else {
_mesa_BindSampler(ctx->Texture.CurrentUnit, mipmap->Sampler);
}
assert(mipmap->FBO != 0);
_mesa_BindFramebuffer(GL_FRAMEBUFFER_EXT, mipmap->FBO);
_mesa_TexParameteri(target, GL_GENERATE_MIPMAP, GL_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_TexParameteriv(target, GL_TEXTURE_SWIZZLE_RGBA, swizzleNoop);
}
/* 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);
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_TexParameteri(target, GL_TEXTURE_MAX_LEVEL, dstLevel);
if (!prepare_mipmap_level(ctx, texObj, dstLevel,
dstWidth, dstHeight, dstDepth,
srcImage->InternalFormat,
srcImage->TexFormat)) {
/* All done. We either ran out of memory or we would go beyond the
* last valid level of an immutable texture if we continued.
*/
break;
}
dstImage = _mesa_select_tex_image(texObj, faceTarget, dstLevel);
/* limit minification to src level */
_mesa_TexParameteri(target, GL_TEXTURE_MAX_LEVEL, srcLevel);
/* 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, 1, /* width, height never used here */
verts[0].tex,
verts[1].tex,
verts[2].tex,
verts[3].tex);
/* upload vertex data */
_mesa_BufferData(GL_ARRAY_BUFFER_ARB, sizeof(verts),
verts, GL_DYNAMIC_DRAW_ARB);
_mesa_meta_bind_fbo_image(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, dstImage, layer);
/* sanity check */
if (_mesa_CheckFramebufferStatus(GL_FRAMEBUFFER) !=
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_BindSampler(ctx->Texture.CurrentUnit, samplerSave);
_mesa_meta_end(ctx);
_mesa_TexParameteri(target, GL_TEXTURE_MAX_LEVEL, maxLevelSave);
if (genMipmapSave)
_mesa_TexParameteri(target, GL_GENERATE_MIPMAP, genMipmapSave);
if (swizzleSaved)
_mesa_TexParameteriv(target, GL_TEXTURE_SWIZZLE_RGBA, swizzle);
}
static void
pop_texture_group(GLcontext *ctx, const struct gl_texture_attrib *texAttrib)
{
GLuint u;
for (u = 0; u < ctx->Const.MaxTextureUnits; u++) {
const struct gl_texture_unit *unit = &texAttrib->Unit[u];
GLuint i;
_mesa_ActiveTextureARB(GL_TEXTURE0_ARB + u);
_mesa_set_enable(ctx, GL_TEXTURE_1D,
(GLboolean) (unit->Enabled & TEXTURE0_1D ? GL_TRUE : GL_FALSE));
_mesa_set_enable(ctx, GL_TEXTURE_2D,
(GLboolean) (unit->Enabled & TEXTURE0_2D ? GL_TRUE : GL_FALSE));
_mesa_set_enable(ctx, GL_TEXTURE_3D,
(GLboolean) (unit->Enabled & TEXTURE0_3D ? GL_TRUE : GL_FALSE));
if (ctx->Extensions.ARB_texture_cube_map) {
_mesa_set_enable(ctx, GL_TEXTURE_CUBE_MAP_ARB,
(GLboolean) (unit->Enabled & TEXTURE0_CUBE ? GL_TRUE : GL_FALSE));
}
if (ctx->Extensions.NV_texture_rectangle) {
_mesa_set_enable(ctx, GL_TEXTURE_RECTANGLE_NV,
(GLboolean) (unit->Enabled & TEXTURE0_RECT ? GL_TRUE : GL_FALSE));
}
_mesa_TexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, unit->EnvMode);
_mesa_TexEnvfv(GL_TEXTURE_ENV, GL_TEXTURE_ENV_COLOR, unit->EnvColor);
_mesa_TexGeni(GL_S, GL_TEXTURE_GEN_MODE, unit->GenModeS);
_mesa_TexGeni(GL_T, GL_TEXTURE_GEN_MODE, unit->GenModeT);
_mesa_TexGeni(GL_R, GL_TEXTURE_GEN_MODE, unit->GenModeR);
_mesa_TexGeni(GL_Q, GL_TEXTURE_GEN_MODE, unit->GenModeQ);
_mesa_TexGenfv(GL_S, GL_OBJECT_PLANE, unit->ObjectPlaneS);
_mesa_TexGenfv(GL_T, GL_OBJECT_PLANE, unit->ObjectPlaneT);
_mesa_TexGenfv(GL_R, GL_OBJECT_PLANE, unit->ObjectPlaneR);
_mesa_TexGenfv(GL_Q, GL_OBJECT_PLANE, unit->ObjectPlaneQ);
_mesa_TexGenfv(GL_S, GL_EYE_PLANE, unit->EyePlaneS);
_mesa_TexGenfv(GL_T, GL_EYE_PLANE, unit->EyePlaneT);
_mesa_TexGenfv(GL_R, GL_EYE_PLANE, unit->EyePlaneR);
_mesa_TexGenfv(GL_Q, GL_EYE_PLANE, unit->EyePlaneQ);
if (ctx->Extensions.EXT_texture_lod_bias) {
_mesa_TexEnvf(GL_TEXTURE_FILTER_CONTROL_EXT,
GL_TEXTURE_LOD_BIAS_EXT, unit->LodBias);
}
if (ctx->Extensions.EXT_texture_env_combine ||
ctx->Extensions.ARB_texture_env_combine) {
_mesa_TexEnvi(GL_TEXTURE_ENV, GL_COMBINE_RGB_EXT,
unit->CombineModeRGB);
_mesa_TexEnvi(GL_TEXTURE_ENV, GL_COMBINE_ALPHA_EXT,
unit->CombineModeA);
_mesa_TexEnvi(GL_TEXTURE_ENV, GL_SOURCE0_RGB_EXT,
unit->CombineSourceRGB[0]);
_mesa_TexEnvi(GL_TEXTURE_ENV, GL_SOURCE1_RGB_EXT,
unit->CombineSourceRGB[1]);
_mesa_TexEnvi(GL_TEXTURE_ENV, GL_SOURCE2_RGB_EXT,
unit->CombineSourceRGB[2]);
_mesa_TexEnvi(GL_TEXTURE_ENV, GL_SOURCE0_ALPHA_EXT,
unit->CombineSourceA[0]);
_mesa_TexEnvi(GL_TEXTURE_ENV, GL_SOURCE1_ALPHA_EXT,
unit->CombineSourceA[1]);
_mesa_TexEnvi(GL_TEXTURE_ENV, GL_SOURCE2_ALPHA_EXT,
unit->CombineSourceA[2]);
_mesa_TexEnvi(GL_TEXTURE_ENV, GL_OPERAND0_RGB_EXT,
unit->CombineOperandRGB[0]);
_mesa_TexEnvi(GL_TEXTURE_ENV, GL_OPERAND1_RGB_EXT,
unit->CombineOperandRGB[1]);
_mesa_TexEnvi(GL_TEXTURE_ENV, GL_OPERAND2_RGB_EXT,
unit->CombineOperandRGB[2]);
_mesa_TexEnvi(GL_TEXTURE_ENV, GL_OPERAND0_ALPHA_EXT,
unit->CombineOperandA[0]);
_mesa_TexEnvi(GL_TEXTURE_ENV, GL_OPERAND1_ALPHA_EXT,
unit->CombineOperandA[1]);
_mesa_TexEnvi(GL_TEXTURE_ENV, GL_OPERAND2_ALPHA_EXT,
unit->CombineOperandA[2]);
_mesa_TexEnvi(GL_TEXTURE_ENV, GL_RGB_SCALE_EXT,
1 << unit->CombineScaleShiftRGB);
_mesa_TexEnvi(GL_TEXTURE_ENV, GL_ALPHA_SCALE,
1 << unit->CombineScaleShiftA);
}
/* Restore texture object state */
for (i = 0; i < NUM_TEXTURE_TARGETS; i++) {
GLenum target = 0;
const struct gl_texture_object *obj = NULL;
GLfloat bordColor[4];
switch (i) {
case 0:
target = GL_TEXTURE_1D;
obj = &unit->Saved1D;
break;
case 1:
target = GL_TEXTURE_2D;
obj = &unit->Saved2D;
break;
case 2:
target = GL_TEXTURE_3D;
obj = &unit->Saved3D;
break;
case 3:
if (!ctx->Extensions.ARB_texture_cube_map)
continue;
target = GL_TEXTURE_CUBE_MAP_ARB;
obj = &unit->SavedCubeMap;
break;
case 4:
if (!ctx->Extensions.NV_texture_rectangle)
continue;
target = GL_TEXTURE_RECTANGLE_NV;
obj = &unit->SavedRect;
break;
default:
; /* silence warnings */
}
_mesa_BindTexture(target, obj->Name);
bordColor[0] = CHAN_TO_FLOAT(obj->BorderColor[0]);
bordColor[1] = CHAN_TO_FLOAT(obj->BorderColor[1]);
bordColor[2] = CHAN_TO_FLOAT(obj->BorderColor[2]);
bordColor[3] = CHAN_TO_FLOAT(obj->BorderColor[3]);
_mesa_TexParameterf(target, GL_TEXTURE_PRIORITY, obj->Priority);
_mesa_TexParameterfv(target, GL_TEXTURE_BORDER_COLOR, bordColor);
_mesa_TexParameteri(target, GL_TEXTURE_WRAP_S, obj->WrapS);
_mesa_TexParameteri(target, GL_TEXTURE_WRAP_T, obj->WrapT);
_mesa_TexParameteri(target, GL_TEXTURE_WRAP_R, obj->WrapR);
_mesa_TexParameteri(target, GL_TEXTURE_MIN_FILTER, obj->MinFilter);
_mesa_TexParameteri(target, GL_TEXTURE_MAG_FILTER, obj->MagFilter);
_mesa_TexParameterf(target, GL_TEXTURE_MIN_LOD, obj->MinLod);
_mesa_TexParameterf(target, GL_TEXTURE_MAX_LOD, obj->MaxLod);
_mesa_TexParameteri(target, GL_TEXTURE_BASE_LEVEL, obj->BaseLevel);
_mesa_TexParameteri(target, GL_TEXTURE_MAX_LEVEL, obj->MaxLevel);
if (ctx->Extensions.EXT_texture_filter_anisotropic) {
_mesa_TexParameterf(target, GL_TEXTURE_MAX_ANISOTROPY_EXT,
obj->MaxAnisotropy);
}
if (ctx->Extensions.SGIX_shadow) {
_mesa_TexParameteri(target, GL_TEXTURE_COMPARE_SGIX,
obj->CompareFlag);
_mesa_TexParameteri(target, GL_TEXTURE_COMPARE_OPERATOR_SGIX,
obj->CompareOperator);
}
if (ctx->Extensions.SGIX_shadow_ambient) {
_mesa_TexParameterf(target, GL_SHADOW_AMBIENT_SGIX,
CHAN_TO_FLOAT(obj->ShadowAmbient));
}
}
}
_mesa_ActiveTextureARB(GL_TEXTURE0_ARB
+ texAttrib->CurrentUnit);
/* "un-bump" the texture object reference counts. We did that so they
* wouldn't inadvertantly get deleted while they were still referenced
* inside the attribute state stack.
*/
for (u = 0; u < ctx->Const.MaxTextureUnits; u++) {
ctx->Texture.Unit[u].Current1D->RefCount--;
ctx->Texture.Unit[u].Current2D->RefCount--;
ctx->Texture.Unit[u].Current3D->RefCount--;
ctx->Texture.Unit[u].CurrentCubeMap->RefCount--;
ctx->Texture.Unit[u].CurrentRect->RefCount--;
}
}
