diff options
| -rw-r--r-- | src/mesa/main/texstate.c | 250 |
1 files changed, 160 insertions, 90 deletions
diff --git a/src/mesa/main/texstate.c b/src/mesa/main/texstate.c index 24469da59b4..0082caf2b1e 100644 --- a/src/mesa/main/texstate.c +++ b/src/mesa/main/texstate.c @@ -40,7 +40,7 @@ #include "teximage.h" #include "texstate.h" #include "mtypes.h" - +#include "bitset.h" /** @@ -515,79 +515,28 @@ update_texgen(struct gl_context *ctx) } } -/** - * \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 ) +update_program_texture_state(struct gl_context *ctx, struct gl_program **prog, + BITSET_WORD *enabled_texture_units) { GLuint unit; - struct gl_program *prog[MESA_SHADER_STAGES]; - GLbitfield enabledFragUnits = 0x0; int i; - for (i = 0; i < MESA_SHADER_STAGES; i++) { - if (ctx->_Shader->CurrentProgram[i] && - ctx->_Shader->CurrentProgram[i]->LinkStatus) { - prog[i] = ctx->_Shader->CurrentProgram[i]->_LinkedShaders[i]->Program; - } else { - if (i == MESA_SHADER_FRAGMENT && ctx->FragmentProgram._Enabled) - prog[i] = &ctx->FragmentProgram.Current->Base; - else - prog[i] = NULL; - } - } - - /* TODO: only set this if there are actual changes */ - ctx->NewState |= _NEW_TEXTURE; - - ctx->Texture._GenFlags = 0x0; - ctx->Texture._TexMatEnabled = 0x0; - ctx->Texture._TexGenEnabled = 0x0; - ctx->Texture._MaxEnabledTexImageUnit = -1; - - /* - * Update texture unit state. - */ for (unit = 0; unit < ctx->Const.MaxCombinedTextureImageUnits; unit++) { struct gl_texture_unit *texUnit = &ctx->Texture.Unit[unit]; - GLbitfield enabledTargetsByStage[MESA_SHADER_STAGES]; 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). - */ for (i = 0; i < MESA_SHADER_STAGES; i++) { if (prog[i]) - enabledTargetsByStage[i] = prog[i]->TexturesUsed[unit]; - else if (i == MESA_SHADER_FRAGMENT) - enabledTargetsByStage[i] = texUnit->Enabled; - else - enabledTargetsByStage[i] = 0; - enabledTargets |= enabledTargetsByStage[i]; + enabledTargets |= prog[i]->TexturesUsed[unit]; } if (enabledTargets == 0x0) { - _mesa_reference_texobj(&texUnit->_Current, NULL); /* 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]; @@ -605,52 +554,173 @@ update_texture_state( struct gl_context *ctx ) } if (texIndex == NUM_TEXTURE_TARGETS) { - if (prog[MESA_SHADER_FRAGMENT]) { - /* 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); - } - else { - /* fixed-function: texture unit is really disabled */ - _mesa_reference_texobj(&texUnit->_Current, NULL); + /* 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); } /* if we get here, we know this texture unit is enabled */ - ctx->Texture._MaxEnabledTexImageUnit = unit; - - if (enabledTargetsByStage[MESA_SHADER_FRAGMENT]) - enabledFragUnits |= (1 << unit); - - if (!prog[MESA_SHADER_FRAGMENT]) - update_tex_combine(ctx, texUnit); + BITSET_SET(enabled_texture_units, unit); + ctx->Texture._MaxEnabledTexImageUnit = + MAX2(ctx->Texture._MaxEnabledTexImageUnit, (int)unit); } - - /* Determine which texture coordinate sets are actually needed */ if (prog[MESA_SHADER_FRAGMENT]) { const GLuint coordMask = (1 << MAX_TEXTURE_COORD_UNITS) - 1; - ctx->Texture._EnabledCoordUnits - = (prog[MESA_SHADER_FRAGMENT]->InputsRead >> VARYING_SLOT_TEX0) & + ctx->Texture._EnabledCoordUnits |= + (prog[MESA_SHADER_FRAGMENT]->InputsRead >> VARYING_SLOT_TEX0) & coordMask; } - else { - ctx->Texture._EnabledCoordUnits = enabledFragUnits; +} + +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]; + GLuint texIndex; + + 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." + */ + for (texIndex = 0; texIndex < NUM_TEXTURE_TARGETS; texIndex++) { + if (texUnit->Enabled & (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)) { + _mesa_reference_texobj(&texUnit->_Current, texObj); + break; + } + } + } + + if (texIndex == NUM_TEXTURE_TARGETS) + 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. + * + * \param ctx GL context. + */ +static void +update_texture_state( struct gl_context *ctx ) +{ + struct gl_program *prog[MESA_SHADER_STAGES]; + int i; + int old_max_unit = ctx->Texture._MaxEnabledTexImageUnit; + BITSET_DECLARE(enabled_texture_units, MAX_COMBINED_TEXTURE_IMAGE_UNITS); + + for (i = 0; i < MESA_SHADER_STAGES; i++) { + if (ctx->_Shader->CurrentProgram[i] && + ctx->_Shader->CurrentProgram[i]->LinkStatus) { + prog[i] = ctx->_Shader->CurrentProgram[i]->_LinkedShaders[i]->Program; + } else { + if (i == MESA_SHADER_FRAGMENT && ctx->FragmentProgram._Enabled) + prog[i] = &ctx->FragmentProgram.Current->Base; + else + prog[i] = NULL; + } + } + + /* TODO: only set this if there are actual changes */ + ctx->NewState |= _NEW_TEXTURE; + + ctx->Texture._GenFlags = 0x0; + ctx->Texture._TexMatEnabled = 0x0; + ctx->Texture._TexGenEnabled = 0x0; + ctx->Texture._MaxEnabledTexImageUnit = -1; + ctx->Texture._EnabledCoordUnits = 0x0; + + memset(&enabled_texture_units, 0, sizeof(enabled_texture_units)); + + /* First, walk over our programs pulling in all the textures for them. + * Programs dictate specific texture targets to be enabled, and for a draw + * call to be valid they can't conflict about which texture targets are + * used. + */ + update_program_texture_state(ctx, prog, enabled_texture_units); + + /* Also pull in any textures necessary for fixed function fragment shading. + */ + if (!prog[MESA_SHADER_FRAGMENT]) + update_ff_texture_state(ctx, enabled_texture_units); + + /* Now, clear out the _Current of any disabled texture units. */ + for (i = 0; i <= ctx->Texture._MaxEnabledTexImageUnit; i++) { + if (!BITSET_TEST(enabled_texture_units, i)) + _mesa_reference_texobj(&ctx->Texture.Unit[i]._Current, NULL); + } + for (i = ctx->Texture._MaxEnabledTexImageUnit + 1; i <= old_max_unit; i++) { + _mesa_reference_texobj(&ctx->Texture.Unit[i]._Current, NULL); } if (!prog[MESA_SHADER_FRAGMENT] || !prog[MESA_SHADER_VERTEX]) |