case GL_SRC1_ALPHA:
case GL_ONE_MINUS_SRC1_COLOR:
case GL_ONE_MINUS_SRC1_ALPHA:
- return _mesa_is_desktop_gl(ctx)
+ return ctx->API != API_OPENGLES
&& ctx->Extensions.ARB_blend_func_extended;
default:
return GL_FALSE;
case GL_ONE_MINUS_CONSTANT_ALPHA:
return _mesa_is_desktop_gl(ctx) || ctx->API == API_OPENGLES2;
case GL_SRC_ALPHA_SATURATE:
- return (_mesa_is_desktop_gl(ctx)
+ 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 _mesa_is_desktop_gl(ctx)
+ return ctx->API != API_OPENGLES
&& ctx->Extensions.ARB_blend_func_extended;
default:
return GL_FALSE;
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;
+}
+
+
/**
* Set the separate blend source/dest factors for all draw buffers.
*
_mesa_BlendFuncSeparate( GLenum sfactorRGB, GLenum dfactorRGB,
GLenum sfactorA, GLenum dfactorA )
{
- GLuint buf, numBuffers;
- GLboolean changed;
GET_CURRENT_CONTEXT(ctx);
+ const unsigned numBuffers = num_buffers(ctx);
+ unsigned buf;
+ bool changed = false;
if (MESA_VERBOSE & VERBOSE_API)
_mesa_debug(ctx, "glBlendFuncSeparate %s %s %s %s\n",
_mesa_enum_to_string(sfactorA),
_mesa_enum_to_string(dfactorA));
- if (!validate_blend_factors(ctx, "glBlendFuncSeparate",
- sfactorRGB, dfactorRGB,
- sfactorA, dfactorA)) {
- return;
+ /* Check if we're really changing any state. If not, return early. */
+ if (ctx->Color._BlendFuncPerBuffer) {
+ /* Check all per-buffer states */
+ for (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) {
+ changed = true;
+ break;
+ }
+ }
}
-
- numBuffers = ctx->Extensions.ARB_draw_buffers_blend
- ? ctx->Const.MaxDrawBuffers : 1;
-
- changed = GL_FALSE;
- for (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) {
- changed = GL_TRUE;
- break;
+ 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) {
+ changed = true;
}
}
+
if (!changed)
return;
+ if (!validate_blend_factors(ctx, "glBlendFuncSeparate",
+ sfactorRGB, dfactorRGB,
+ sfactorA, dfactorA)) {
+ return;
+ }
+
FLUSH_VERTICES(ctx, _NEW_COLOR);
for (buf = 0; buf < numBuffers; buf++) {
ctx->Color.Blend[buf].DstRGB = dfactorRGB;
ctx->Color.Blend[buf].SrcA = sfactorA;
ctx->Color.Blend[buf].DstA = dfactorA;
- update_uses_dual_src(ctx, buf);
}
+
+ update_uses_dual_src(ctx, 0);
+ for (buf = 1; buf < numBuffers; buf++) {
+ ctx->Color.Blend[buf]._UsesDualSrc = ctx->Color.Blend[0]._UsesDualSrc;
+ }
+
ctx->Color._BlendFuncPerBuffer = GL_FALSE;
if (ctx->Driver.BlendFuncSeparate) {
return;
}
- if (!validate_blend_factors(ctx, "glBlendFuncSeparatei",
- sfactorRGB, dfactorRGB,
- sfactorA, dfactorA)) {
- return;
- }
-
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 (!validate_blend_factors(ctx, "glBlendFuncSeparatei",
+ sfactorRGB, dfactorRGB,
+ sfactorA, dfactorA)) {
+ return;
+ }
+
FLUSH_VERTICES(ctx, _NEW_COLOR);
ctx->Color.Blend[buf].SrcRGB = sfactorRGB;
ctx->Color.Blend[buf].DstA = dfactorA;
update_uses_dual_src(ctx, buf);
ctx->Color._BlendFuncPerBuffer = GL_TRUE;
-
- if (ctx->Driver.BlendFuncSeparatei) {
- ctx->Driver.BlendFuncSeparatei(ctx, buf, sfactorRGB, dfactorRGB,
- sfactorA, dfactorA);
- }
}
/**
- * Check if given blend equation is legal.
- * \return GL_TRUE if legal, GL_FALSE otherwise.
+ * Return true if \p mode is a legal blending equation, excluding
+ * GL_KHR_blend_equation_advanced modes.
*/
-static GLboolean
-legal_blend_equation(const struct gl_context *ctx, GLenum mode)
+static bool
+legal_simple_blend_equation(const struct gl_context *ctx, GLenum mode)
{
switch (mode) {
case GL_FUNC_ADD:
}
}
+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 )
{
- GLuint buf, numBuffers;
- GLboolean changed;
GET_CURRENT_CONTEXT(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_enum_to_string(mode));
- if (!legal_blend_equation(ctx, mode)) {
- _mesa_error(ctx, GL_INVALID_ENUM, "glBlendEquation");
- return;
+ 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;
+ }
+ }
}
-
- numBuffers = ctx->Extensions.ARB_draw_buffers_blend
- ? ctx->Const.MaxDrawBuffers : 1;
-
- changed = GL_FALSE;
- for (buf = 0; buf < numBuffers; buf++) {
- if (ctx->Color.Blend[buf].EquationRGB != mode ||
- ctx->Color.Blend[buf].EquationA != mode) {
- changed = GL_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 (!legal_simple_blend_equation(ctx, mode) && !advanced_mode) {
+ _mesa_error(ctx, GL_INVALID_ENUM, "glBlendEquation");
+ return;
+ }
+
FLUSH_VERTICES(ctx, _NEW_COLOR);
+
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);
}
_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, "glBlendEquationi(%u, %s)\n",
buf, _mesa_enum_to_string(mode));
if (buf >= ctx->Const.MaxDrawBuffers) {
- _mesa_error(ctx, GL_INVALID_VALUE, "glBlendFuncSeparatei(buffer=%u)",
+ _mesa_error(ctx, GL_INVALID_VALUE, "glBlendEquationi(buffer=%u)",
buf);
return;
}
- if (!legal_blend_equation(ctx, mode)) {
+ if (!legal_simple_blend_equation(ctx, mode) && !advanced_mode) {
_mesa_error(ctx, GL_INVALID_ENUM, "glBlendEquationi");
return;
}
ctx->Color.Blend[buf].EquationA = mode;
ctx->Color._BlendEquationPerBuffer = GL_TRUE;
- if (ctx->Driver.BlendEquationSeparatei)
- ctx->Driver.BlendEquationSeparatei(ctx, buf, mode, mode);
+ if (buf == 0)
+ ctx->Color._AdvancedBlendMode = advanced_mode;
}
void GLAPIENTRY
_mesa_BlendEquationSeparate( GLenum modeRGB, GLenum modeA )
{
- GLuint buf, numBuffers;
- GLboolean changed;
GET_CURRENT_CONTEXT(ctx);
+ const unsigned numBuffers = num_buffers(ctx);
+ unsigned buf;
+ bool changed = false;
if (MESA_VERBOSE & VERBOSE_API)
_mesa_debug(ctx, "glBlendEquationSeparateEXT(%s %s)\n",
_mesa_enum_to_string(modeRGB),
_mesa_enum_to_string(modeA));
+ 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;
+
if ( (modeRGB != modeA) && !ctx->Extensions.EXT_blend_equation_separate ) {
_mesa_error(ctx, GL_INVALID_OPERATION,
"glBlendEquationSeparateEXT not supported by driver");
return;
}
- if (!legal_blend_equation(ctx, modeRGB)) {
+ /* 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_blend_equation(ctx, modeA)) {
+ if (!legal_simple_blend_equation(ctx, modeA)) {
_mesa_error(ctx, GL_INVALID_ENUM, "glBlendEquationSeparateEXT(modeA)");
return;
}
- numBuffers = ctx->Extensions.ARB_draw_buffers_blend
- ? ctx->Const.MaxDrawBuffers : 1;
-
- changed = GL_FALSE;
- for (buf = 0; buf < numBuffers; buf++) {
- if (ctx->Color.Blend[buf].EquationRGB != modeRGB ||
- ctx->Color.Blend[buf].EquationA != modeA) {
- changed = GL_TRUE;
- break;
- }
- }
- if (!changed)
- return;
-
FLUSH_VERTICES(ctx, _NEW_COLOR);
+
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);
return;
}
- if (!legal_blend_equation(ctx, modeRGB)) {
+ /* 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_blend_equation(ctx, modeA)) {
+ if (!legal_simple_blend_equation(ctx, modeA)) {
_mesa_error(ctx, GL_INVALID_ENUM, "glBlendEquationSeparatei(modeA)");
return;
}
ctx->Color.Blend[buf].EquationRGB = modeRGB;
ctx->Color.Blend[buf].EquationA = modeA;
ctx->Color._BlendEquationPerBuffer = GL_TRUE;
-
- if (ctx->Driver.BlendEquationSeparatei)
- ctx->Driver.BlendEquationSeparatei(ctx, buf, modeRGB, modeA);
+ ctx->Color._AdvancedBlendMode = BLEND_NONE;
}
ctx->Color.BlendColor[3] = CLAMP(tmp[3], 0.0F, 1.0F);
if (ctx->Driver.BlendColor)
- (*ctx->Driver.BlendColor)(ctx, ctx->Color.BlendColor);
+ ctx->Driver.BlendColor(ctx, ctx->Color.BlendColor);
}
* \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.
*/
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);
}
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