X-Git-Url: https://git.libre-soc.org/?a=blobdiff_plain;ds=sidebyside;f=src%2Fmesa%2Fmain%2Fblend.c;h=1b84c9077f0f7d89f35f9bdd95fda32fc9d9caab;hb=HEAD;hp=ec778b7244dd8968f92aaf11248a14502db1a2e1;hpb=dbf3a15313eed930a3d8fdde12e457259c43651b;p=mesa.git diff --git a/src/mesa/main/blend.c b/src/mesa/main/blend.c index ec778b7244d..1b84c9077f0 100644 --- a/src/mesa/main/blend.c +++ b/src/mesa/main/blend.c @@ -5,7 +5,6 @@ /* * Mesa 3-D graphics library - * Version: 6.5.1 * * Copyright (C) 1999-2006 Brian Paul All Rights Reserved. * @@ -22,9 +21,10 @@ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL - * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN - * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN - * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR + * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, + * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR + * OTHER DEALINGS IN THE SOFTWARE. */ @@ -35,6 +35,223 @@ #include "enums.h" #include "macros.h" #include "mtypes.h" +#include "state.h" + + + +/** + * Check if given blend source factor is legal. + * \return GL_TRUE if legal, GL_FALSE otherwise. + */ +static GLboolean +legal_src_factor(const struct gl_context *ctx, GLenum factor) +{ + switch (factor) { + case GL_SRC_COLOR: + case GL_ONE_MINUS_SRC_COLOR: + case GL_ZERO: + case GL_ONE: + case GL_DST_COLOR: + case GL_ONE_MINUS_DST_COLOR: + case GL_SRC_ALPHA: + case GL_ONE_MINUS_SRC_ALPHA: + case GL_DST_ALPHA: + case GL_ONE_MINUS_DST_ALPHA: + case GL_SRC_ALPHA_SATURATE: + return GL_TRUE; + case GL_CONSTANT_COLOR: + case GL_ONE_MINUS_CONSTANT_COLOR: + case GL_CONSTANT_ALPHA: + case GL_ONE_MINUS_CONSTANT_ALPHA: + return _mesa_is_desktop_gl(ctx) || ctx->API == API_OPENGLES2; + case GL_SRC1_COLOR: + case GL_SRC1_ALPHA: + case GL_ONE_MINUS_SRC1_COLOR: + case GL_ONE_MINUS_SRC1_ALPHA: + return ctx->API != API_OPENGLES + && ctx->Extensions.ARB_blend_func_extended; + default: + return GL_FALSE; + } +} + + +/** + * Check if given blend destination factor is legal. + * \return GL_TRUE if legal, GL_FALSE otherwise. + */ +static GLboolean +legal_dst_factor(const struct gl_context *ctx, GLenum factor) +{ + switch (factor) { + case GL_DST_COLOR: + case GL_ONE_MINUS_DST_COLOR: + case GL_ZERO: + case GL_ONE: + case GL_SRC_COLOR: + case GL_ONE_MINUS_SRC_COLOR: + case GL_SRC_ALPHA: + case GL_ONE_MINUS_SRC_ALPHA: + case GL_DST_ALPHA: + case GL_ONE_MINUS_DST_ALPHA: + return GL_TRUE; + case GL_CONSTANT_COLOR: + case GL_ONE_MINUS_CONSTANT_COLOR: + case GL_CONSTANT_ALPHA: + case GL_ONE_MINUS_CONSTANT_ALPHA: + return _mesa_is_desktop_gl(ctx) || ctx->API == API_OPENGLES2; + case GL_SRC_ALPHA_SATURATE: + return (ctx->API != API_OPENGLES + && ctx->Extensions.ARB_blend_func_extended) + || _mesa_is_gles3(ctx); + case GL_SRC1_COLOR: + case GL_SRC1_ALPHA: + case GL_ONE_MINUS_SRC1_COLOR: + case GL_ONE_MINUS_SRC1_ALPHA: + return ctx->API != API_OPENGLES + && ctx->Extensions.ARB_blend_func_extended; + default: + return GL_FALSE; + } +} + + +/** + * Check if src/dest RGB/A blend factors are legal. If not generate + * a GL error. + * \return GL_TRUE if factors are legal, GL_FALSE otherwise. + */ +static GLboolean +validate_blend_factors(struct gl_context *ctx, const char *func, + GLenum sfactorRGB, GLenum dfactorRGB, + GLenum sfactorA, GLenum dfactorA) +{ + if (!legal_src_factor(ctx, sfactorRGB)) { + _mesa_error(ctx, GL_INVALID_ENUM, + "%s(sfactorRGB = %s)", func, + _mesa_enum_to_string(sfactorRGB)); + return GL_FALSE; + } + + if (!legal_dst_factor(ctx, dfactorRGB)) { + _mesa_error(ctx, GL_INVALID_ENUM, + "%s(dfactorRGB = %s)", func, + _mesa_enum_to_string(dfactorRGB)); + return GL_FALSE; + } + + if (sfactorA != sfactorRGB && !legal_src_factor(ctx, sfactorA)) { + _mesa_error(ctx, GL_INVALID_ENUM, + "%s(sfactorA = %s)", func, + _mesa_enum_to_string(sfactorA)); + return GL_FALSE; + } + + if (dfactorA != dfactorRGB && !legal_dst_factor(ctx, dfactorA)) { + _mesa_error(ctx, GL_INVALID_ENUM, + "%s(dfactorA = %s)", func, + _mesa_enum_to_string(dfactorA)); + return GL_FALSE; + } + + return GL_TRUE; +} + + +static GLboolean +blend_factor_is_dual_src(GLenum factor) +{ + return (factor == GL_SRC1_COLOR || + factor == GL_SRC1_ALPHA || + factor == GL_ONE_MINUS_SRC1_COLOR || + factor == GL_ONE_MINUS_SRC1_ALPHA); +} + +static void +update_uses_dual_src(struct gl_context *ctx, int buf) +{ + ctx->Color.Blend[buf]._UsesDualSrc = + (blend_factor_is_dual_src(ctx->Color.Blend[buf].SrcRGB) || + blend_factor_is_dual_src(ctx->Color.Blend[buf].DstRGB) || + blend_factor_is_dual_src(ctx->Color.Blend[buf].SrcA) || + blend_factor_is_dual_src(ctx->Color.Blend[buf].DstA)); +} + + +/** + * Return the number of per-buffer blend states to update in + * glBlendFunc, glBlendFuncSeparate, glBlendEquation, etc. + */ +static inline unsigned +num_buffers(const struct gl_context *ctx) +{ + return ctx->Extensions.ARB_draw_buffers_blend + ? ctx->Const.MaxDrawBuffers : 1; +} + + +/* Returns true if there was no change */ +static bool +skip_blend_state_update(const struct gl_context *ctx, + GLenum sfactorRGB, GLenum dfactorRGB, + GLenum sfactorA, GLenum dfactorA) +{ + /* Check if we're really changing any state. If not, return early. */ + if (ctx->Color._BlendFuncPerBuffer) { + const unsigned numBuffers = num_buffers(ctx); + + /* Check all per-buffer states */ + for (unsigned buf = 0; buf < numBuffers; buf++) { + if (ctx->Color.Blend[buf].SrcRGB != sfactorRGB || + ctx->Color.Blend[buf].DstRGB != dfactorRGB || + ctx->Color.Blend[buf].SrcA != sfactorA || + ctx->Color.Blend[buf].DstA != dfactorA) { + return false; + } + } + } + else { + /* only need to check 0th per-buffer state */ + if (ctx->Color.Blend[0].SrcRGB != sfactorRGB || + ctx->Color.Blend[0].DstRGB != dfactorRGB || + ctx->Color.Blend[0].SrcA != sfactorA || + ctx->Color.Blend[0].DstA != dfactorA) { + return false; + } + } + + return true; +} + + +static void +blend_func_separate(struct gl_context *ctx, + GLenum sfactorRGB, GLenum dfactorRGB, + GLenum sfactorA, GLenum dfactorA) +{ + FLUSH_VERTICES(ctx, ctx->DriverFlags.NewBlend ? 0 : _NEW_COLOR); + ctx->NewDriverState |= ctx->DriverFlags.NewBlend; + + const unsigned numBuffers = num_buffers(ctx); + for (unsigned buf = 0; buf < numBuffers; buf++) { + ctx->Color.Blend[buf].SrcRGB = sfactorRGB; + ctx->Color.Blend[buf].DstRGB = dfactorRGB; + ctx->Color.Blend[buf].SrcA = sfactorA; + ctx->Color.Blend[buf].DstA = dfactorA; + } + + update_uses_dual_src(ctx, 0); + for (unsigned buf = 1; buf < numBuffers; buf++) { + ctx->Color.Blend[buf]._UsesDualSrc = ctx->Color.Blend[0]._UsesDualSrc; + } + + ctx->Color._BlendFuncPerBuffer = GL_FALSE; + + if (ctx->Driver.BlendFuncSeparate) { + ctx->Driver.BlendFuncSeparate(ctx, sfactorRGB, dfactorRGB, + sfactorA, dfactorA); + } +} /** @@ -48,267 +265,502 @@ void GLAPIENTRY _mesa_BlendFunc( GLenum sfactor, GLenum dfactor ) { - _mesa_BlendFuncSeparateEXT(sfactor, dfactor, sfactor, dfactor); + GET_CURRENT_CONTEXT(ctx); + + if (skip_blend_state_update(ctx, sfactor, dfactor, sfactor, dfactor)) + return; + + if (!validate_blend_factors(ctx, "glBlendFunc", + sfactor, dfactor, sfactor, dfactor)) { + return; + } + + blend_func_separate(ctx, sfactor, dfactor, sfactor, dfactor); +} + + +void GLAPIENTRY +_mesa_BlendFunc_no_error(GLenum sfactor, GLenum dfactor) +{ + GET_CURRENT_CONTEXT(ctx); + + if (skip_blend_state_update(ctx, sfactor, dfactor, sfactor, dfactor)) + return; + + blend_func_separate(ctx, sfactor, dfactor, sfactor, dfactor); } /** - * Process GL_EXT_blend_func_separate(). + * Set the separate blend source/dest factors for all draw buffers. * * \param sfactorRGB RGB source factor operator. * \param dfactorRGB RGB destination factor operator. * \param sfactorA alpha source factor operator. * \param dfactorA alpha destination factor operator. - * - * Verifies the parameters and updates gl_colorbuffer_attrib. - * On a change, flush the vertices and notify the driver via - * dd_function_table::BlendFuncSeparate. */ void GLAPIENTRY -_mesa_BlendFuncSeparateEXT( GLenum sfactorRGB, GLenum dfactorRGB, +_mesa_BlendFuncSeparate( GLenum sfactorRGB, GLenum dfactorRGB, GLenum sfactorA, GLenum dfactorA ) { GET_CURRENT_CONTEXT(ctx); - ASSERT_OUTSIDE_BEGIN_END(ctx); if (MESA_VERBOSE & VERBOSE_API) _mesa_debug(ctx, "glBlendFuncSeparate %s %s %s %s\n", - _mesa_lookup_enum_by_nr(sfactorRGB), - _mesa_lookup_enum_by_nr(dfactorRGB), - _mesa_lookup_enum_by_nr(sfactorA), - _mesa_lookup_enum_by_nr(dfactorA)); - - switch (sfactorRGB) { - case GL_SRC_COLOR: - case GL_ONE_MINUS_SRC_COLOR: - if (!ctx->Extensions.NV_blend_square) { - _mesa_error(ctx, GL_INVALID_ENUM, "glBlendFunc or glBlendFuncSeparate (sfactorRGB)"); - return; - } - /* fall-through */ - case GL_ZERO: - case GL_ONE: - case GL_DST_COLOR: - case GL_ONE_MINUS_DST_COLOR: - case GL_SRC_ALPHA: - case GL_ONE_MINUS_SRC_ALPHA: - case GL_DST_ALPHA: - case GL_ONE_MINUS_DST_ALPHA: - case GL_SRC_ALPHA_SATURATE: - case GL_CONSTANT_COLOR: - case GL_ONE_MINUS_CONSTANT_COLOR: - case GL_CONSTANT_ALPHA: - case GL_ONE_MINUS_CONSTANT_ALPHA: - break; - default: - _mesa_error(ctx, GL_INVALID_ENUM, "glBlendFunc or glBlendFuncSeparate (sfactorRGB)"); - return; - } + _mesa_enum_to_string(sfactorRGB), + _mesa_enum_to_string(dfactorRGB), + _mesa_enum_to_string(sfactorA), + _mesa_enum_to_string(dfactorA)); - switch (dfactorRGB) { - case GL_DST_COLOR: - case GL_ONE_MINUS_DST_COLOR: - if (!ctx->Extensions.NV_blend_square) { - _mesa_error(ctx, GL_INVALID_ENUM, "glBlendFunc or glBlendFuncSeparate (dfactorRGB)"); - return; - } - /* fall-through */ - case GL_ZERO: - case GL_ONE: - case GL_SRC_COLOR: - case GL_ONE_MINUS_SRC_COLOR: - case GL_SRC_ALPHA: - case GL_ONE_MINUS_SRC_ALPHA: - case GL_DST_ALPHA: - case GL_ONE_MINUS_DST_ALPHA: - case GL_CONSTANT_COLOR: - case GL_ONE_MINUS_CONSTANT_COLOR: - case GL_CONSTANT_ALPHA: - case GL_ONE_MINUS_CONSTANT_ALPHA: - break; - default: - _mesa_error(ctx, GL_INVALID_ENUM, "glBlendFunc or glBlendFuncSeparate (dfactorRGB)"); - return; + + + if (skip_blend_state_update(ctx, sfactorRGB, dfactorRGB, sfactorA, dfactorA)) + return; + + if (!validate_blend_factors(ctx, "glBlendFuncSeparate", + sfactorRGB, dfactorRGB, + sfactorA, dfactorA)) { + return; } - switch (sfactorA) { - case GL_SRC_COLOR: - case GL_ONE_MINUS_SRC_COLOR: - if (!ctx->Extensions.NV_blend_square) { - _mesa_error(ctx, GL_INVALID_ENUM, "glBlendFunc or glBlendFuncSeparate (sfactorA)"); - return; - } - /* fall-through */ - case GL_ZERO: - case GL_ONE: - case GL_DST_COLOR: - case GL_ONE_MINUS_DST_COLOR: - case GL_SRC_ALPHA: - case GL_ONE_MINUS_SRC_ALPHA: - case GL_DST_ALPHA: - case GL_ONE_MINUS_DST_ALPHA: - case GL_SRC_ALPHA_SATURATE: - case GL_CONSTANT_COLOR: - case GL_ONE_MINUS_CONSTANT_COLOR: - case GL_CONSTANT_ALPHA: - case GL_ONE_MINUS_CONSTANT_ALPHA: - break; - default: - _mesa_error(ctx, GL_INVALID_ENUM, "glBlendFunc or glBlendFuncSeparate (sfactorA)"); + blend_func_separate(ctx, sfactorRGB, dfactorRGB, sfactorA, dfactorA); +} + + +void GLAPIENTRY +_mesa_BlendFuncSeparate_no_error(GLenum sfactorRGB, GLenum dfactorRGB, + GLenum sfactorA, GLenum dfactorA) +{ + GET_CURRENT_CONTEXT(ctx); + + if (skip_blend_state_update(ctx, sfactorRGB, dfactorRGB, sfactorA, dfactorA)) + return; + + blend_func_separate(ctx, sfactorRGB, dfactorRGB, sfactorA, dfactorA); +} + + +void GLAPIENTRY +_mesa_BlendFunciARB_no_error(GLuint buf, GLenum sfactor, GLenum dfactor) +{ + _mesa_BlendFuncSeparateiARB_no_error(buf, sfactor, dfactor, sfactor, + dfactor); +} + + +/** + * Set blend source/dest factors for one color buffer/target. + */ +void GLAPIENTRY +_mesa_BlendFunciARB(GLuint buf, GLenum sfactor, GLenum dfactor) +{ + _mesa_BlendFuncSeparateiARB(buf, sfactor, dfactor, sfactor, dfactor); +} + + +static ALWAYS_INLINE void +blend_func_separatei(GLuint buf, GLenum sfactorRGB, GLenum dfactorRGB, + GLenum sfactorA, GLenum dfactorA, bool no_error) +{ + GET_CURRENT_CONTEXT(ctx); + + if (!no_error) { + if (!ctx->Extensions.ARB_draw_buffers_blend) { + _mesa_error(ctx, GL_INVALID_OPERATION, "glBlendFunc[Separate]i()"); return; - } + } - switch (dfactorA) { - case GL_DST_COLOR: - case GL_ONE_MINUS_DST_COLOR: - if (!ctx->Extensions.NV_blend_square) { - _mesa_error(ctx, GL_INVALID_ENUM, "glBlendFunc or glBlendFuncSeparate (dfactorA)"); - return; - } - /* fall-through */ - case GL_ZERO: - case GL_ONE: - case GL_SRC_COLOR: - case GL_ONE_MINUS_SRC_COLOR: - case GL_SRC_ALPHA: - case GL_ONE_MINUS_SRC_ALPHA: - case GL_DST_ALPHA: - case GL_ONE_MINUS_DST_ALPHA: - case GL_CONSTANT_COLOR: - case GL_ONE_MINUS_CONSTANT_COLOR: - case GL_CONSTANT_ALPHA: - case GL_ONE_MINUS_CONSTANT_ALPHA: - break; - default: - _mesa_error( ctx, GL_INVALID_ENUM, "glBlendFunc or glBlendFuncSeparate (dfactorA)" ); + if (buf >= ctx->Const.MaxDrawBuffers) { + _mesa_error(ctx, GL_INVALID_VALUE, "glBlendFuncSeparatei(buffer=%u)", + buf); return; + } } - if (ctx->Color.BlendSrcRGB == sfactorRGB && - ctx->Color.BlendDstRGB == dfactorRGB && - ctx->Color.BlendSrcA == sfactorA && - ctx->Color.BlendDstA == dfactorA) + if (ctx->Color.Blend[buf].SrcRGB == sfactorRGB && + ctx->Color.Blend[buf].DstRGB == dfactorRGB && + ctx->Color.Blend[buf].SrcA == sfactorA && + ctx->Color.Blend[buf].DstA == dfactorA) + return; /* no change */ + + if (!no_error && !validate_blend_factors(ctx, "glBlendFuncSeparatei", + sfactorRGB, dfactorRGB, + sfactorA, dfactorA)) { return; + } - FLUSH_VERTICES(ctx, _NEW_COLOR); + FLUSH_VERTICES(ctx, ctx->DriverFlags.NewBlend ? 0 : _NEW_COLOR); + ctx->NewDriverState |= ctx->DriverFlags.NewBlend; - ctx->Color.BlendSrcRGB = sfactorRGB; - ctx->Color.BlendDstRGB = dfactorRGB; - ctx->Color.BlendSrcA = sfactorA; - ctx->Color.BlendDstA = dfactorA; + ctx->Color.Blend[buf].SrcRGB = sfactorRGB; + ctx->Color.Blend[buf].DstRGB = dfactorRGB; + ctx->Color.Blend[buf].SrcA = sfactorA; + ctx->Color.Blend[buf].DstA = dfactorA; + update_uses_dual_src(ctx, buf); + ctx->Color._BlendFuncPerBuffer = GL_TRUE; +} - if (ctx->Driver.BlendFuncSeparate) { - (*ctx->Driver.BlendFuncSeparate)( ctx, sfactorRGB, dfactorRGB, - sfactorA, dfactorA ); - } + +void GLAPIENTRY +_mesa_BlendFuncSeparateiARB_no_error(GLuint buf, GLenum sfactorRGB, + GLenum dfactorRGB, GLenum sfactorA, + GLenum dfactorA) +{ + blend_func_separatei(buf, sfactorRGB, dfactorRGB, sfactorA, dfactorA, + true); } -#if _HAVE_FULL_GL +/** + * Set separate blend source/dest factors for one color buffer/target. + */ +void GLAPIENTRY +_mesa_BlendFuncSeparateiARB(GLuint buf, GLenum sfactorRGB, GLenum dfactorRGB, + GLenum sfactorA, GLenum dfactorA) +{ + blend_func_separatei(buf, sfactorRGB, dfactorRGB, sfactorA, dfactorA, + false); +} -static GLboolean -_mesa_validate_blend_equation( struct gl_context *ctx, - GLenum mode, GLboolean is_separate ) + +/** + * Return true if \p mode is a legal blending equation, excluding + * GL_KHR_blend_equation_advanced modes. + */ +static bool +legal_simple_blend_equation(const struct gl_context *ctx, GLenum mode) { switch (mode) { - case GL_FUNC_ADD: - break; - case GL_MIN: - case GL_MAX: - if (!ctx->Extensions.EXT_blend_minmax) { - return GL_FALSE; - } - break; - /* glBlendEquationSeparate cannot take GL_LOGIC_OP as a parameter. - */ - case GL_LOGIC_OP: - if (!ctx->Extensions.EXT_blend_logic_op || is_separate) { - return GL_FALSE; - } - break; - case GL_FUNC_SUBTRACT: - case GL_FUNC_REVERSE_SUBTRACT: - if (!ctx->Extensions.EXT_blend_subtract) { - return GL_FALSE; - } - break; - default: - return GL_FALSE; + case GL_FUNC_ADD: + case GL_FUNC_SUBTRACT: + case GL_FUNC_REVERSE_SUBTRACT: + return GL_TRUE; + case GL_MIN: + case GL_MAX: + return ctx->Extensions.EXT_blend_minmax; + default: + return GL_FALSE; } +} - return GL_TRUE; +static enum gl_advanced_blend_mode +advanced_blend_mode_from_gl_enum(GLenum mode) +{ + switch (mode) { + case GL_MULTIPLY_KHR: + return BLEND_MULTIPLY; + case GL_SCREEN_KHR: + return BLEND_SCREEN; + case GL_OVERLAY_KHR: + return BLEND_OVERLAY; + case GL_DARKEN_KHR: + return BLEND_DARKEN; + case GL_LIGHTEN_KHR: + return BLEND_LIGHTEN; + case GL_COLORDODGE_KHR: + return BLEND_COLORDODGE; + case GL_COLORBURN_KHR: + return BLEND_COLORBURN; + case GL_HARDLIGHT_KHR: + return BLEND_HARDLIGHT; + case GL_SOFTLIGHT_KHR: + return BLEND_SOFTLIGHT; + case GL_DIFFERENCE_KHR: + return BLEND_DIFFERENCE; + case GL_EXCLUSION_KHR: + return BLEND_EXCLUSION; + case GL_HSL_HUE_KHR: + return BLEND_HSL_HUE; + case GL_HSL_SATURATION_KHR: + return BLEND_HSL_SATURATION; + case GL_HSL_COLOR_KHR: + return BLEND_HSL_COLOR; + case GL_HSL_LUMINOSITY_KHR: + return BLEND_HSL_LUMINOSITY; + default: + return BLEND_NONE; + } } +/** + * If \p mode is one of the advanced blending equations defined by + * GL_KHR_blend_equation_advanced (and the extension is supported), + * return the corresponding BLEND_* enum. Otherwise, return BLEND_NONE + * (which can also be treated as false). + */ +static enum gl_advanced_blend_mode +advanced_blend_mode(const struct gl_context *ctx, GLenum mode) +{ + return _mesa_has_KHR_blend_equation_advanced(ctx) ? + advanced_blend_mode_from_gl_enum(mode) : BLEND_NONE; +} /* This is really an extension function! */ void GLAPIENTRY _mesa_BlendEquation( GLenum mode ) { GET_CURRENT_CONTEXT(ctx); - ASSERT_OUTSIDE_BEGIN_END(ctx); + const unsigned numBuffers = num_buffers(ctx); + unsigned buf; + bool changed = false; + enum gl_advanced_blend_mode advanced_mode = advanced_blend_mode(ctx, mode); if (MESA_VERBOSE & VERBOSE_API) - _mesa_debug(ctx, "glBlendEquation %s\n", - _mesa_lookup_enum_by_nr(mode)); + _mesa_debug(ctx, "glBlendEquation(%s)\n", + _mesa_enum_to_string(mode)); + + if (ctx->Color._BlendEquationPerBuffer) { + /* Check all per-buffer states */ + for (buf = 0; buf < numBuffers; buf++) { + if (ctx->Color.Blend[buf].EquationRGB != mode || + ctx->Color.Blend[buf].EquationA != mode) { + changed = true; + break; + } + } + } + else { + /* only need to check 0th per-buffer state */ + if (ctx->Color.Blend[0].EquationRGB != mode || + ctx->Color.Blend[0].EquationA != mode) { + changed = true; + } + } + + if (!changed) + return; - if ( ! _mesa_validate_blend_equation( ctx, mode, GL_FALSE ) ) { + + if (!legal_simple_blend_equation(ctx, mode) && !advanced_mode) { _mesa_error(ctx, GL_INVALID_ENUM, "glBlendEquation"); return; } - if ( (ctx->Color.BlendEquationRGB == mode) && - (ctx->Color.BlendEquationA == mode) ) - return; + _mesa_flush_vertices_for_blend_adv(ctx, ctx->Color.BlendEnabled, + advanced_mode); - FLUSH_VERTICES(ctx, _NEW_COLOR); - ctx->Color.BlendEquationRGB = mode; - ctx->Color.BlendEquationA = mode; + for (buf = 0; buf < numBuffers; buf++) { + ctx->Color.Blend[buf].EquationRGB = mode; + ctx->Color.Blend[buf].EquationA = mode; + } + ctx->Color._BlendEquationPerBuffer = GL_FALSE; + ctx->Color._AdvancedBlendMode = advanced_mode; if (ctx->Driver.BlendEquationSeparate) - (*ctx->Driver.BlendEquationSeparate)( ctx, mode, mode ); + ctx->Driver.BlendEquationSeparate(ctx, mode, mode); +} + + +/** + * Set blend equation for one color buffer/target. + */ +static void +blend_equationi(struct gl_context *ctx, GLuint buf, GLenum mode, + enum gl_advanced_blend_mode advanced_mode) +{ + if (ctx->Color.Blend[buf].EquationRGB == mode && + ctx->Color.Blend[buf].EquationA == mode) + return; /* no change */ + + _mesa_flush_vertices_for_blend_adv(ctx, ctx->Color.BlendEnabled, + advanced_mode); + ctx->Color.Blend[buf].EquationRGB = mode; + ctx->Color.Blend[buf].EquationA = mode; + ctx->Color._BlendEquationPerBuffer = GL_TRUE; + + if (buf == 0) + ctx->Color._AdvancedBlendMode = advanced_mode; +} + + +void GLAPIENTRY +_mesa_BlendEquationiARB_no_error(GLuint buf, GLenum mode) +{ + GET_CURRENT_CONTEXT(ctx); + + enum gl_advanced_blend_mode advanced_mode = advanced_blend_mode(ctx, mode); + blend_equationi(ctx, buf, mode, advanced_mode); } void GLAPIENTRY -_mesa_BlendEquationSeparateEXT( GLenum modeRGB, GLenum modeA ) +_mesa_BlendEquationiARB(GLuint buf, GLenum mode) { GET_CURRENT_CONTEXT(ctx); - ASSERT_OUTSIDE_BEGIN_END(ctx); + enum gl_advanced_blend_mode advanced_mode = advanced_blend_mode(ctx, mode); if (MESA_VERBOSE & VERBOSE_API) - _mesa_debug(ctx, "glBlendEquationSeparateEXT %s %s\n", - _mesa_lookup_enum_by_nr(modeRGB), - _mesa_lookup_enum_by_nr(modeA)); + _mesa_debug(ctx, "glBlendEquationi(%u, %s)\n", + buf, _mesa_enum_to_string(mode)); - if ( (modeRGB != modeA) && !ctx->Extensions.EXT_blend_equation_separate ) { - _mesa_error(ctx, GL_INVALID_OPERATION, - "glBlendEquationSeparateEXT not supported by driver"); + if (buf >= ctx->Const.MaxDrawBuffers) { + _mesa_error(ctx, GL_INVALID_VALUE, "glBlendEquationi(buffer=%u)", + buf); return; } - if ( ! _mesa_validate_blend_equation( ctx, modeRGB, GL_TRUE ) ) { - _mesa_error(ctx, GL_INVALID_ENUM, "glBlendEquationSeparateEXT(modeRGB)"); + if (!legal_simple_blend_equation(ctx, mode) && !advanced_mode) { + _mesa_error(ctx, GL_INVALID_ENUM, "glBlendEquationi"); return; } - if ( ! _mesa_validate_blend_equation( ctx, modeA, GL_TRUE ) ) { - _mesa_error(ctx, GL_INVALID_ENUM, "glBlendEquationSeparateEXT(modeA)"); - return; - } + blend_equationi(ctx, buf, mode, advanced_mode); +} - if ( (ctx->Color.BlendEquationRGB == modeRGB) && - (ctx->Color.BlendEquationA == modeA) ) +static void +blend_equation_separate(struct gl_context *ctx, GLenum modeRGB, GLenum modeA, + bool no_error) +{ + const unsigned numBuffers = num_buffers(ctx); + unsigned buf; + bool changed = false; + + if (ctx->Color._BlendEquationPerBuffer) { + /* Check all per-buffer states */ + for (buf = 0; buf < numBuffers; buf++) { + if (ctx->Color.Blend[buf].EquationRGB != modeRGB || + ctx->Color.Blend[buf].EquationA != modeA) { + changed = true; + break; + } + } + } else { + /* only need to check 0th per-buffer state */ + if (ctx->Color.Blend[0].EquationRGB != modeRGB || + ctx->Color.Blend[0].EquationA != modeA) { + changed = true; + } + } + + if (!changed) return; - FLUSH_VERTICES(ctx, _NEW_COLOR); - ctx->Color.BlendEquationRGB = modeRGB; - ctx->Color.BlendEquationA = modeA; + if (!no_error) { + if ((modeRGB != modeA) && !ctx->Extensions.EXT_blend_equation_separate) { + _mesa_error(ctx, GL_INVALID_OPERATION, + "glBlendEquationSeparateEXT not supported by driver"); + return; + } + + /* Only allow simple blending equations. + * The GL_KHR_blend_equation_advanced spec says: + * + * "NOTE: These enums are not accepted by the or + * parameters of BlendEquationSeparate or BlendEquationSeparatei." + */ + if (!legal_simple_blend_equation(ctx, modeRGB)) { + _mesa_error(ctx, GL_INVALID_ENUM, + "glBlendEquationSeparateEXT(modeRGB)"); + return; + } + + if (!legal_simple_blend_equation(ctx, modeA)) { + _mesa_error(ctx, GL_INVALID_ENUM, "glBlendEquationSeparateEXT(modeA)"); + return; + } + } + + _mesa_flush_vertices_for_blend_state(ctx); + + for (buf = 0; buf < numBuffers; buf++) { + ctx->Color.Blend[buf].EquationRGB = modeRGB; + ctx->Color.Blend[buf].EquationA = modeA; + } + ctx->Color._BlendEquationPerBuffer = GL_FALSE; + ctx->Color._AdvancedBlendMode = BLEND_NONE; if (ctx->Driver.BlendEquationSeparate) - (*ctx->Driver.BlendEquationSeparate)( ctx, modeRGB, modeA ); + ctx->Driver.BlendEquationSeparate(ctx, modeRGB, modeA); +} + + +void GLAPIENTRY +_mesa_BlendEquationSeparate_no_error(GLenum modeRGB, GLenum modeA) +{ + GET_CURRENT_CONTEXT(ctx); + blend_equation_separate(ctx, modeRGB, modeA, true); +} + + +void GLAPIENTRY +_mesa_BlendEquationSeparate(GLenum modeRGB, GLenum modeA) +{ + GET_CURRENT_CONTEXT(ctx); + + if (MESA_VERBOSE & VERBOSE_API) + _mesa_debug(ctx, "glBlendEquationSeparateEXT(%s %s)\n", + _mesa_enum_to_string(modeRGB), + _mesa_enum_to_string(modeA)); + + blend_equation_separate(ctx, modeRGB, modeA, false); +} + + +static ALWAYS_INLINE void +blend_equation_separatei(struct gl_context *ctx, GLuint buf, GLenum modeRGB, + GLenum modeA, bool no_error) +{ + if (ctx->Color.Blend[buf].EquationRGB == modeRGB && + ctx->Color.Blend[buf].EquationA == modeA) + return; /* no change */ + + if (!no_error) { + /* Only allow simple blending equations. + * The GL_KHR_blend_equation_advanced spec says: + * + * "NOTE: These enums are not accepted by the or + * parameters of BlendEquationSeparate or BlendEquationSeparatei." + */ + if (!legal_simple_blend_equation(ctx, modeRGB)) { + _mesa_error(ctx, GL_INVALID_ENUM, "glBlendEquationSeparatei(modeRGB)"); + return; + } + + if (!legal_simple_blend_equation(ctx, modeA)) { + _mesa_error(ctx, GL_INVALID_ENUM, "glBlendEquationSeparatei(modeA)"); + return; + } + } + + _mesa_flush_vertices_for_blend_state(ctx); + ctx->Color.Blend[buf].EquationRGB = modeRGB; + ctx->Color.Blend[buf].EquationA = modeA; + ctx->Color._BlendEquationPerBuffer = GL_TRUE; + ctx->Color._AdvancedBlendMode = BLEND_NONE; +} + + +void GLAPIENTRY +_mesa_BlendEquationSeparateiARB_no_error(GLuint buf, GLenum modeRGB, + GLenum modeA) +{ + GET_CURRENT_CONTEXT(ctx); + blend_equation_separatei(ctx, buf, modeRGB, modeA, true); +} + + +/** + * Set separate blend equations for one color buffer/target. + */ +void GLAPIENTRY +_mesa_BlendEquationSeparateiARB(GLuint buf, GLenum modeRGB, GLenum modeA) +{ + GET_CURRENT_CONTEXT(ctx); + + if (MESA_VERBOSE & VERBOSE_API) + _mesa_debug(ctx, "glBlendEquationSeparatei(%u, %s %s)\n", buf, + _mesa_enum_to_string(modeRGB), + _mesa_enum_to_string(modeA)); + + if (buf >= ctx->Const.MaxDrawBuffers) { + _mesa_error(ctx, GL_INVALID_VALUE, "glBlendEquationSeparatei(buffer=%u)", + buf); + return; + } + + blend_equation_separatei(ctx, buf, modeRGB, modeA, false); } -#endif /** @@ -330,21 +782,26 @@ _mesa_BlendColor( GLclampf red, GLclampf green, GLclampf blue, GLclampf alpha ) { GLfloat tmp[4]; GET_CURRENT_CONTEXT(ctx); - ASSERT_OUTSIDE_BEGIN_END(ctx); - tmp[0] = CLAMP( red, 0.0F, 1.0F ); - tmp[1] = CLAMP( green, 0.0F, 1.0F ); - tmp[2] = CLAMP( blue, 0.0F, 1.0F ); - tmp[3] = CLAMP( alpha, 0.0F, 1.0F ); + tmp[0] = red; + tmp[1] = green; + tmp[2] = blue; + tmp[3] = alpha; - if (TEST_EQ_4V(tmp, ctx->Color.BlendColor)) + if (TEST_EQ_4V(tmp, ctx->Color.BlendColorUnclamped)) return; - FLUSH_VERTICES(ctx, _NEW_COLOR); - COPY_4FV( ctx->Color.BlendColor, tmp ); + FLUSH_VERTICES(ctx, ctx->DriverFlags.NewBlendColor ? 0 : _NEW_COLOR); + ctx->NewDriverState |= ctx->DriverFlags.NewBlendColor; + COPY_4FV( ctx->Color.BlendColorUnclamped, tmp ); + + ctx->Color.BlendColor[0] = CLAMP(tmp[0], 0.0F, 1.0F); + ctx->Color.BlendColor[1] = CLAMP(tmp[1], 0.0F, 1.0F); + ctx->Color.BlendColor[2] = CLAMP(tmp[2], 0.0F, 1.0F); + ctx->Color.BlendColor[3] = CLAMP(tmp[3], 0.0F, 1.0F); if (ctx->Driver.BlendColor) - (*ctx->Driver.BlendColor)(ctx, tmp); + ctx->Driver.BlendColor(ctx, ctx->Color.BlendColor); } @@ -362,7 +819,13 @@ void GLAPIENTRY _mesa_AlphaFunc( GLenum func, GLclampf ref ) { GET_CURRENT_CONTEXT(ctx); - ASSERT_OUTSIDE_BEGIN_END(ctx); + + if (MESA_VERBOSE & VERBOSE_API) + _mesa_debug(ctx, "glAlphaFunc(%s, %f)\n", + _mesa_enum_to_string(func), ref); + + if (ctx->Color.AlphaFunc == func && ctx->Color.AlphaRefUnclamped == ref) + return; /* no change */ switch (func) { case GL_NEVER: @@ -373,17 +836,14 @@ _mesa_AlphaFunc( GLenum func, GLclampf ref ) case GL_NOTEQUAL: case GL_GEQUAL: case GL_ALWAYS: - ref = CLAMP(ref, 0.0F, 1.0F); - - if (ctx->Color.AlphaFunc == func && ctx->Color.AlphaRef == ref) - return; /* no change */ - - FLUSH_VERTICES(ctx, _NEW_COLOR); + FLUSH_VERTICES(ctx, ctx->DriverFlags.NewAlphaTest ? 0 : _NEW_COLOR); + ctx->NewDriverState |= ctx->DriverFlags.NewAlphaTest; ctx->Color.AlphaFunc = func; - ctx->Color.AlphaRef = ref; + ctx->Color.AlphaRefUnclamped = ref; + ctx->Color.AlphaRef = CLAMP(ref, 0.0F, 1.0F); if (ctx->Driver.AlphaFunc) - ctx->Driver.AlphaFunc(ctx, func, ref); + ctx->Driver.AlphaFunc(ctx, func, ctx->Color.AlphaRef); return; default: @@ -392,6 +852,66 @@ _mesa_AlphaFunc( GLenum func, GLclampf ref ) } } +static const enum gl_logicop_mode color_logicop_mapping[16] = { + COLOR_LOGICOP_CLEAR, + COLOR_LOGICOP_AND, + COLOR_LOGICOP_AND_REVERSE, + COLOR_LOGICOP_COPY, + COLOR_LOGICOP_AND_INVERTED, + COLOR_LOGICOP_NOOP, + COLOR_LOGICOP_XOR, + COLOR_LOGICOP_OR, + COLOR_LOGICOP_NOR, + COLOR_LOGICOP_EQUIV, + COLOR_LOGICOP_INVERT, + COLOR_LOGICOP_OR_REVERSE, + COLOR_LOGICOP_COPY_INVERTED, + COLOR_LOGICOP_OR_INVERTED, + COLOR_LOGICOP_NAND, + COLOR_LOGICOP_SET +}; + +static ALWAYS_INLINE void +logic_op(struct gl_context *ctx, GLenum opcode, bool no_error) +{ + if (ctx->Color.LogicOp == opcode) + return; + + if (!no_error) { + switch (opcode) { + case GL_CLEAR: + case GL_SET: + case GL_COPY: + case GL_COPY_INVERTED: + case GL_NOOP: + case GL_INVERT: + case GL_AND: + case GL_NAND: + case GL_OR: + case GL_NOR: + case GL_XOR: + case GL_EQUIV: + case GL_AND_REVERSE: + case GL_AND_INVERTED: + case GL_OR_REVERSE: + case GL_OR_INVERTED: + break; + default: + _mesa_error( ctx, GL_INVALID_ENUM, "glLogicOp" ); + return; + } + } + + FLUSH_VERTICES(ctx, ctx->DriverFlags.NewLogicOp ? 0 : _NEW_COLOR); + ctx->NewDriverState |= ctx->DriverFlags.NewLogicOp; + ctx->Color.LogicOp = opcode; + ctx->Color._LogicOp = color_logicop_mapping[opcode & 0x0f]; + _mesa_update_allow_draw_out_of_order(ctx); + + if (ctx->Driver.LogicOpcode) + ctx->Driver.LogicOpcode(ctx, ctx->Color._LogicOp); +} + /** * Specify a logic pixel operation for color index rendering. @@ -399,7 +919,7 @@ _mesa_AlphaFunc( GLenum func, GLclampf ref ) * \param opcode operation. * * Verifies that \p opcode is a valid enum and updates -gl_colorbuffer_attrib::LogicOp. + * gl_colorbuffer_attrib::LogicOp. * On a change, flushes the vertices and notifies the driver via the * dd_function_table::LogicOpcode callback. */ @@ -407,55 +927,34 @@ void GLAPIENTRY _mesa_LogicOp( GLenum opcode ) { GET_CURRENT_CONTEXT(ctx); - ASSERT_OUTSIDE_BEGIN_END(ctx); - - switch (opcode) { - case GL_CLEAR: - case GL_SET: - case GL_COPY: - case GL_COPY_INVERTED: - case GL_NOOP: - case GL_INVERT: - case GL_AND: - case GL_NAND: - case GL_OR: - case GL_NOR: - case GL_XOR: - case GL_EQUIV: - case GL_AND_REVERSE: - case GL_AND_INVERTED: - case GL_OR_REVERSE: - case GL_OR_INVERTED: - break; - default: - _mesa_error( ctx, GL_INVALID_ENUM, "glLogicOp" ); - return; - } - if (ctx->Color.LogicOp == opcode) - return; + if (MESA_VERBOSE & VERBOSE_API) + _mesa_debug(ctx, "glLogicOp(%s)\n", _mesa_enum_to_string(opcode)); - FLUSH_VERTICES(ctx, _NEW_COLOR); - ctx->Color.LogicOp = opcode; + logic_op(ctx, opcode, false); +} - if (ctx->Driver.LogicOpcode) - ctx->Driver.LogicOpcode( ctx, opcode ); + +void GLAPIENTRY +_mesa_LogicOp_no_error(GLenum opcode) +{ + GET_CURRENT_CONTEXT(ctx); + logic_op(ctx, opcode, true); } -#if _HAVE_FULL_GL + void GLAPIENTRY _mesa_IndexMask( GLuint mask ) { GET_CURRENT_CONTEXT(ctx); - ASSERT_OUTSIDE_BEGIN_END(ctx); if (ctx->Color.IndexMask == mask) return; - FLUSH_VERTICES(ctx, _NEW_COLOR); + FLUSH_VERTICES(ctx, ctx->DriverFlags.NewColorMask ? 0 : _NEW_COLOR); + ctx->NewDriverState |= ctx->DriverFlags.NewColorMask; ctx->Color.IndexMask = mask; } -#endif /** @@ -477,32 +976,24 @@ _mesa_ColorMask( GLboolean red, GLboolean green, GLboolean blue, GLboolean alpha ) { GET_CURRENT_CONTEXT(ctx); - GLubyte tmp[4]; - GLuint i; - GLboolean flushed; - ASSERT_OUTSIDE_BEGIN_END(ctx); if (MESA_VERBOSE & VERBOSE_API) - _mesa_debug(ctx, "glColorMask %d %d %d %d\n", red, green, blue, alpha); + _mesa_debug(ctx, "glColorMask(%d, %d, %d, %d)\n", + red, green, blue, alpha); - /* Shouldn't have any information about channel depth in core mesa - * -- should probably store these as the native booleans: - */ - tmp[RCOMP] = red ? 0xff : 0x0; - tmp[GCOMP] = green ? 0xff : 0x0; - tmp[BCOMP] = blue ? 0xff : 0x0; - tmp[ACOMP] = alpha ? 0xff : 0x0; - - flushed = GL_FALSE; - for (i = 0; i < ctx->Const.MaxDrawBuffers; i++) { - if (!TEST_EQ_4V(tmp, ctx->Color.ColorMask[i])) { - if (!flushed) { - FLUSH_VERTICES(ctx, _NEW_COLOR); - } - flushed = GL_TRUE; - COPY_4UBV(ctx->Color.ColorMask[i], tmp); - } - } + GLbitfield mask = (!!red) | + ((!!green) << 1) | + ((!!blue) << 2) | + ((!!alpha) << 3); + mask = _mesa_replicate_colormask(mask, ctx->Const.MaxDrawBuffers); + + if (ctx->Color.ColorMask == mask) + return; + + FLUSH_VERTICES(ctx, ctx->DriverFlags.NewColorMask ? 0 : _NEW_COLOR); + ctx->NewDriverState |= ctx->DriverFlags.NewColorMask; + ctx->Color.ColorMask = mask; + _mesa_update_allow_draw_out_of_order(ctx); if (ctx->Driver.ColorMask) ctx->Driver.ColorMask( ctx, red, green, blue, alpha ); @@ -513,47 +1004,48 @@ _mesa_ColorMask( GLboolean red, GLboolean green, * For GL_EXT_draw_buffers2 and GL3 */ void GLAPIENTRY -_mesa_ColorMaskIndexed( GLuint buf, GLboolean red, GLboolean green, - GLboolean blue, GLboolean alpha ) +_mesa_ColorMaski(GLuint buf, GLboolean red, GLboolean green, + GLboolean blue, GLboolean alpha) { - GLubyte tmp[4]; GET_CURRENT_CONTEXT(ctx); - ASSERT_OUTSIDE_BEGIN_END(ctx); if (MESA_VERBOSE & VERBOSE_API) - _mesa_debug(ctx, "glColorMaskIndexed %u %d %d %d %d\n", + _mesa_debug(ctx, "glColorMaski %u %d %d %d %d\n", buf, red, green, blue, alpha); if (buf >= ctx->Const.MaxDrawBuffers) { - _mesa_error(ctx, GL_INVALID_VALUE, "glColorMaskIndexed(buf=%u)", buf); + _mesa_error(ctx, GL_INVALID_VALUE, "glColorMaski(buf=%u)", buf); return; } - /* Shouldn't have any information about channel depth in core mesa - * -- should probably store these as the native booleans: - */ - tmp[RCOMP] = red ? 0xff : 0x0; - tmp[GCOMP] = green ? 0xff : 0x0; - tmp[BCOMP] = blue ? 0xff : 0x0; - tmp[ACOMP] = alpha ? 0xff : 0x0; + GLbitfield mask = (!!red) | + ((!!green) << 1) | + ((!!blue) << 2) | + ((!!alpha) << 3); - if (TEST_EQ_4V(tmp, ctx->Color.ColorMask[buf])) + if (GET_COLORMASK(ctx->Color.ColorMask, buf) == mask) return; - FLUSH_VERTICES(ctx, _NEW_COLOR); - COPY_4UBV(ctx->Color.ColorMask[buf], tmp); - - if (ctx->Driver.ColorMaskIndexed) - ctx->Driver.ColorMaskIndexed(ctx, buf, red, green, blue, alpha); + FLUSH_VERTICES(ctx, ctx->DriverFlags.NewColorMask ? 0 : _NEW_COLOR); + ctx->NewDriverState |= ctx->DriverFlags.NewColorMask; + ctx->Color.ColorMask &= ~(0xf << (4 * buf)); + ctx->Color.ColorMask |= mask << (4 * buf); + _mesa_update_allow_draw_out_of_order(ctx); } -extern void GLAPIENTRY -_mesa_ClampColorARB(GLenum target, GLenum clamp) +void GLAPIENTRY +_mesa_ClampColor(GLenum target, GLenum clamp) { GET_CURRENT_CONTEXT(ctx); - ASSERT_OUTSIDE_BEGIN_END(ctx); + /* Check for both the extension and the GL version, since the Intel driver + * does not advertise the extension in core profiles. + */ + if (ctx->Version <= 30 && !ctx->Extensions.ARB_color_buffer_float) { + _mesa_error(ctx, GL_INVALID_OPERATION, "glClampColor()"); + return; + } if (clamp != GL_TRUE && clamp != GL_FALSE && clamp != GL_FIXED_ONLY_ARB) { _mesa_error(ctx, GL_INVALID_ENUM, "glClampColorARB(clamp)"); @@ -562,22 +1054,123 @@ _mesa_ClampColorARB(GLenum target, GLenum clamp) switch (target) { case GL_CLAMP_VERTEX_COLOR_ARB: + if (ctx->API == API_OPENGL_CORE) + goto invalid_enum; + FLUSH_VERTICES(ctx, _NEW_LIGHT); ctx->Light.ClampVertexColor = clamp; + _mesa_update_clamp_vertex_color(ctx, ctx->DrawBuffer); break; case GL_CLAMP_FRAGMENT_COLOR_ARB: - ctx->Color.ClampFragmentColor = clamp; + if (ctx->API == API_OPENGL_CORE) + goto invalid_enum; + if (ctx->Color.ClampFragmentColor != clamp) { + ctx->Color.ClampFragmentColor = clamp; + _mesa_update_clamp_fragment_color(ctx, ctx->DrawBuffer); + } break; case GL_CLAMP_READ_COLOR_ARB: ctx->Color.ClampReadColor = clamp; break; default: - _mesa_error(ctx, GL_INVALID_ENUM, "glClampColorARB(target)"); - return; + goto invalid_enum; } + return; + +invalid_enum: + _mesa_error(ctx, GL_INVALID_ENUM, "glClampColor(%s)", + _mesa_enum_to_string(target)); +} + +static GLboolean +get_clamp_color(const struct gl_framebuffer *fb, GLenum clamp) +{ + if (clamp == GL_TRUE || clamp == GL_FALSE) + return clamp; + + assert(clamp == GL_FIXED_ONLY); + if (!fb) + return GL_TRUE; + + return fb->_AllColorBuffersFixedPoint; +} + +GLboolean +_mesa_get_clamp_fragment_color(const struct gl_context *ctx, + const struct gl_framebuffer *drawFb) +{ + return get_clamp_color(drawFb, ctx->Color.ClampFragmentColor); } +GLboolean +_mesa_get_clamp_vertex_color(const struct gl_context *ctx, + const struct gl_framebuffer *drawFb) +{ + return get_clamp_color(drawFb, ctx->Light.ClampVertexColor); +} +GLboolean +_mesa_get_clamp_read_color(const struct gl_context *ctx, + const struct gl_framebuffer *readFb) +{ + return get_clamp_color(readFb, ctx->Color.ClampReadColor); +} +/** + * Update the ctx->Color._ClampFragmentColor field + */ +void +_mesa_update_clamp_fragment_color(struct gl_context *ctx, + const struct gl_framebuffer *drawFb) +{ + GLboolean clamp; + + /* Don't clamp if: + * - there is no colorbuffer + * - all colorbuffers are unsigned normalized, so clamping has no effect + * - there is an integer colorbuffer + */ + if (!drawFb || !drawFb->_HasSNormOrFloatColorBuffer || + drawFb->_IntegerBuffers) + clamp = GL_FALSE; + else + clamp = _mesa_get_clamp_fragment_color(ctx, drawFb); + + if (ctx->Color._ClampFragmentColor == clamp) + return; + + ctx->NewState |= _NEW_FRAG_CLAMP; /* for state constants */ + ctx->NewDriverState |= ctx->DriverFlags.NewFragClamp; + ctx->Color._ClampFragmentColor = clamp; +} + +/** + * Update the ctx->Color._ClampVertexColor field + */ +void +_mesa_update_clamp_vertex_color(struct gl_context *ctx, + const struct gl_framebuffer *drawFb) +{ + ctx->Light._ClampVertexColor = + _mesa_get_clamp_vertex_color(ctx, drawFb); +} + +/** + * Returns an appropriate mesa_format for color rendering based on the + * GL_FRAMEBUFFER_SRGB state. + * + * Some drivers implement GL_FRAMEBUFFER_SRGB using a flag on the blend state + * (which GL_FRAMEBUFFER_SRGB maps to reasonably), but some have to do so by + * overriding the format of the surface. This is a helper for doing the + * surface format override variant. + */ +mesa_format +_mesa_get_render_format(const struct gl_context *ctx, mesa_format format) +{ + if (ctx->Color.sRGBEnabled) + return format; + else + return _mesa_get_srgb_format_linear(format); +} /**********************************************************************/ /** \name Initialization */ @@ -593,37 +1186,53 @@ _mesa_ClampColorARB(GLenum target, GLenum clamp) */ void _mesa_init_color( struct gl_context * ctx ) { + GLuint i; + /* Color buffer group */ ctx->Color.IndexMask = ~0u; - memset(ctx->Color.ColorMask, 0xff, sizeof(ctx->Color.ColorMask)); + ctx->Color.ColorMask = 0xffffffff; ctx->Color.ClearIndex = 0; - ASSIGN_4V( ctx->Color.ClearColor, 0, 0, 0, 0 ); + ASSIGN_4V( ctx->Color.ClearColor.f, 0, 0, 0, 0 ); ctx->Color.AlphaEnabled = GL_FALSE; ctx->Color.AlphaFunc = GL_ALWAYS; ctx->Color.AlphaRef = 0; ctx->Color.BlendEnabled = 0x0; - ctx->Color.BlendSrcRGB = GL_ONE; - ctx->Color.BlendDstRGB = GL_ZERO; - ctx->Color.BlendSrcA = GL_ONE; - ctx->Color.BlendDstA = GL_ZERO; - ctx->Color.BlendEquationRGB = GL_FUNC_ADD; - ctx->Color.BlendEquationA = GL_FUNC_ADD; + for (i = 0; i < ARRAY_SIZE(ctx->Color.Blend); i++) { + ctx->Color.Blend[i].SrcRGB = GL_ONE; + ctx->Color.Blend[i].DstRGB = GL_ZERO; + ctx->Color.Blend[i].SrcA = GL_ONE; + ctx->Color.Blend[i].DstA = GL_ZERO; + ctx->Color.Blend[i].EquationRGB = GL_FUNC_ADD; + ctx->Color.Blend[i].EquationA = GL_FUNC_ADD; + } ASSIGN_4V( ctx->Color.BlendColor, 0.0, 0.0, 0.0, 0.0 ); + ASSIGN_4V( ctx->Color.BlendColorUnclamped, 0.0, 0.0, 0.0, 0.0 ); ctx->Color.IndexLogicOpEnabled = GL_FALSE; ctx->Color.ColorLogicOpEnabled = GL_FALSE; - ctx->Color._LogicOpEnabled = GL_FALSE; ctx->Color.LogicOp = GL_COPY; + ctx->Color._LogicOp = COLOR_LOGICOP_COPY; ctx->Color.DitherFlag = GL_TRUE; - if (ctx->Visual.doubleBufferMode) { + /* GL_FRONT is not possible on GLES. Instead GL_BACK will render to either + * the front or the back buffer depending on the config */ + if (ctx->Visual.doubleBufferMode || _mesa_is_gles(ctx)) { ctx->Color.DrawBuffer[0] = GL_BACK; } else { ctx->Color.DrawBuffer[0] = GL_FRONT; } - ctx->Color.ClampFragmentColor = GL_FIXED_ONLY_ARB; + ctx->Color.ClampFragmentColor = ctx->API == API_OPENGL_COMPAT ? + GL_FIXED_ONLY_ARB : GL_FALSE; + ctx->Color._ClampFragmentColor = GL_FALSE; ctx->Color.ClampReadColor = GL_FIXED_ONLY_ARB; + + /* GLES 1/2/3 behaves as though GL_FRAMEBUFFER_SRGB is always enabled + * if EGL_KHR_gl_colorspace has been used to request sRGB. + */ + ctx->Color.sRGBEnabled = _mesa_is_gles(ctx); + + ctx->Color.BlendCoherent = true; } /*@}*/