/*
* Mesa 3-D graphics library
- * Version: 6.5.1
*
* Copyright (C) 1999-2006 Brian Paul All Rights Reserved.
*
* 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.
*/
#include "mtypes.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);
+ }
+}
+
+
/**
* Specify the blending operation.
*
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( GLcontext *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 ( ! _mesa_validate_blend_equation( ctx, mode, GL_FALSE ) ) {
+ if (!changed)
+ return;
+
+
+ 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_BlendEquationSeparateEXT( GLenum modeRGB, GLenum modeA )
+_mesa_BlendEquationiARB_no_error(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);
+ blend_equationi(ctx, buf, mode, advanced_mode);
+}
+
+
+void GLAPIENTRY
+_mesa_BlendEquationiARB(GLuint buf, GLenum mode)
+{
+ GET_CURRENT_CONTEXT(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 <modeRGB> or <modeAlpha>
+ * 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 <modeRGB> or <modeAlpha>
+ * 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
/**
{
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);
}
_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:
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:
}
}
+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];
+
+ if (ctx->Driver.LogicOpcode)
+ ctx->Driver.LogicOpcode(ctx, ctx->Color._LogicOp);
+}
+
/**
* Specify a logic pixel operation for color index rendering.
* \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.
*/
_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
/**
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;
if (ctx->Driver.ColorMask)
ctx->Driver.ColorMask( ctx, red, green, blue, alpha );
* 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);
}
-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)");
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:
+ if (ctx->API == API_OPENGL_CORE)
+ goto invalid_enum;
+ FLUSH_VERTICES(ctx, _NEW_FRAG_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)
+{
+ /* 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)
+ ctx->Color._ClampFragmentColor = GL_FALSE;
+ else
+ ctx->Color._ClampFragmentColor =
+ _mesa_get_clamp_fragment_color(ctx, drawFb);
+}
+/**
+ * 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 */
* \param ctx GL context.
*
* Initializes the related fields in the context color attribute group,
- * __GLcontextRec::Color.
+ * __struct gl_contextRec::Color.
*/
-void _mesa_init_color( GLcontext * ctx )
+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;
}
/*@}*/
projects / mesa.git / blobdiff