/*
* Mesa 3-D graphics library
- * Version: 6.5.1
*
* Copyright (C) 1999-2006 Brian Paul All Rights Reserved.
*
switch (factor) {
case GL_SRC_COLOR:
case GL_ONE_MINUS_SRC_COLOR:
- return ctx->Extensions.NV_blend_square;
case GL_ZERO:
case GL_ONE:
case GL_DST_COLOR:
switch (factor) {
case GL_DST_COLOR:
case GL_ONE_MINUS_DST_COLOR:
- return ctx->Extensions.NV_blend_square;
case GL_ZERO:
case GL_ONE:
case GL_SRC_COLOR:
if (!legal_src_factor(ctx, sfactorRGB)) {
_mesa_error(ctx, GL_INVALID_ENUM,
"%s(sfactorRGB = %s)", func,
- _mesa_lookup_enum_by_nr(sfactorRGB));
+ _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_lookup_enum_by_nr(dfactorRGB));
+ _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_lookup_enum_by_nr(sfactorA));
+ _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_lookup_enum_by_nr(dfactorA));
+ _mesa_enum_to_string(dfactorA));
return GL_FALSE;
}
GLenum sfactorA, GLenum dfactorA )
{
GLuint buf, numBuffers;
- GLboolean changed;
+ bool changed = false;
GET_CURRENT_CONTEXT(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));
-
- if (!validate_blend_factors(ctx, "glBlendFuncSeparate",
- sfactorRGB, dfactorRGB,
- sfactorA, dfactorA)) {
- return;
- }
+ _mesa_enum_to_string(sfactorRGB),
+ _mesa_enum_to_string(dfactorRGB),
+ _mesa_enum_to_string(sfactorA),
+ _mesa_enum_to_string(dfactorA));
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;
+ /* 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;
+ }
+ }
+ }
+ 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].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);
- }
}
if (MESA_VERBOSE & VERBOSE_API)
_mesa_debug(ctx, "glBlendEquation(%s)\n",
- _mesa_lookup_enum_by_nr(mode));
+ _mesa_enum_to_string(mode));
if (!legal_blend_equation(ctx, mode)) {
_mesa_error(ctx, GL_INVALID_ENUM, "glBlendEquation");
if (MESA_VERBOSE & VERBOSE_API)
_mesa_debug(ctx, "glBlendEquationi(%u, %s)\n",
- buf, _mesa_lookup_enum_by_nr(mode));
+ buf, _mesa_enum_to_string(mode));
if (buf >= ctx->Const.MaxDrawBuffers) {
_mesa_error(ctx, GL_INVALID_VALUE, "glBlendFuncSeparatei(buffer=%u)",
ctx->Color.Blend[buf].EquationRGB = mode;
ctx->Color.Blend[buf].EquationA = mode;
ctx->Color._BlendEquationPerBuffer = GL_TRUE;
-
- if (ctx->Driver.BlendEquationSeparatei)
- ctx->Driver.BlendEquationSeparatei(ctx, buf, mode, 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_enum_to_string(modeRGB),
+ _mesa_enum_to_string(modeA));
if ( (modeRGB != modeA) && !ctx->Extensions.EXT_blend_equation_separate ) {
_mesa_error(ctx, GL_INVALID_OPERATION,
if (MESA_VERBOSE & VERBOSE_API)
_mesa_debug(ctx, "glBlendEquationSeparatei(%u, %s %s)\n", buf,
- _mesa_lookup_enum_by_nr(modeRGB),
- _mesa_lookup_enum_by_nr(modeA));
+ _mesa_enum_to_string(modeRGB),
+ _mesa_enum_to_string(modeA));
if (buf >= ctx->Const.MaxDrawBuffers) {
_mesa_error(ctx, GL_INVALID_VALUE, "glBlendEquationSeparatei(buffer=%u)",
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);
}
if (MESA_VERBOSE & VERBOSE_API)
_mesa_debug(ctx, "glAlphaFunc(%s, %f)\n",
- _mesa_lookup_enum_by_nr(func), ref);
+ _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:
- if (ctx->Color.AlphaFunc == func && ctx->Color.AlphaRefUnclamped == ref)
- return; /* no change */
-
FLUSH_VERTICES(ctx, _NEW_COLOR);
ctx->Color.AlphaFunc = func;
ctx->Color.AlphaRefUnclamped = ref;
GET_CURRENT_CONTEXT(ctx);
if (MESA_VERBOSE & VERBOSE_API)
- _mesa_debug(ctx, "glLogicOp(%s)\n", _mesa_lookup_enum_by_nr(opcode));
+ _mesa_debug(ctx, "glLogicOp(%s)\n", _mesa_enum_to_string(opcode));
switch (opcode) {
case GL_CLEAR:
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, _NEW_LIGHT);
ctx->Light.ClampVertexColor = clamp;
- _mesa_update_clamp_vertex_color(ctx);
+ _mesa_update_clamp_vertex_color(ctx, ctx->DrawBuffer);
break;
case GL_CLAMP_FRAGMENT_COLOR_ARB:
if (ctx->API == API_OPENGL_CORE &&
}
FLUSH_VERTICES(ctx, _NEW_FRAG_CLAMP);
ctx->Color.ClampFragmentColor = clamp;
- _mesa_update_clamp_fragment_color(ctx);
+ _mesa_update_clamp_fragment_color(ctx, ctx->DrawBuffer);
break;
case GL_CLAMP_READ_COLOR_ARB:
ctx->Color.ClampReadColor = clamp;
invalid_enum:
_mesa_error(ctx, GL_INVALID_ENUM, "glClampColor(%s)",
- _mesa_lookup_enum_by_nr(target));
+ _mesa_enum_to_string(target));
}
static GLboolean
if (clamp == GL_TRUE || clamp == GL_FALSE)
return clamp;
- ASSERT(clamp == GL_FIXED_ONLY);
+ assert(clamp == GL_FIXED_ONLY);
if (!fb)
return GL_TRUE;
}
GLboolean
-_mesa_get_clamp_fragment_color(const struct gl_context *ctx)
+_mesa_get_clamp_fragment_color(const struct gl_context *ctx,
+ const struct gl_framebuffer *drawFb)
{
- return get_clamp_color(ctx->DrawBuffer,
- ctx->Color.ClampFragmentColor);
+ return get_clamp_color(drawFb, ctx->Color.ClampFragmentColor);
}
GLboolean
-_mesa_get_clamp_vertex_color(const struct gl_context *ctx)
+_mesa_get_clamp_vertex_color(const struct gl_context *ctx,
+ const struct gl_framebuffer *drawFb)
{
- return get_clamp_color(ctx->DrawBuffer, ctx->Light.ClampVertexColor);
+ return get_clamp_color(drawFb, ctx->Light.ClampVertexColor);
}
GLboolean
-_mesa_get_clamp_read_color(const struct gl_context *ctx)
+_mesa_get_clamp_read_color(const struct gl_context *ctx,
+ const struct gl_framebuffer *readFb)
{
- return get_clamp_color(ctx->ReadBuffer, ctx->Color.ClampReadColor);
+ return get_clamp_color(readFb, ctx->Color.ClampReadColor);
}
/**
* Update the ctx->Color._ClampFragmentColor field
*/
void
-_mesa_update_clamp_fragment_color(struct gl_context *ctx)
+_mesa_update_clamp_fragment_color(struct gl_context *ctx,
+ const struct gl_framebuffer *drawFb)
{
- struct gl_framebuffer *fb = ctx->DrawBuffer;
-
/* Don't clamp if:
* - there is no colorbuffer
* - all colorbuffers are unsigned normalized, so clamping has no effect
* - there is an integer colorbuffer
*/
- if (!fb || !fb->_HasSNormOrFloatColorBuffer || fb->_IntegerColor)
+ if (!drawFb || !drawFb->_HasSNormOrFloatColorBuffer ||
+ drawFb->_IntegerColor)
ctx->Color._ClampFragmentColor = GL_FALSE;
else
- ctx->Color._ClampFragmentColor = _mesa_get_clamp_fragment_color(ctx);
+ 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)
+_mesa_update_clamp_vertex_color(struct gl_context *ctx,
+ const struct gl_framebuffer *drawFb)
{
- ctx->Light._ClampVertexColor = _mesa_get_clamp_vertex_color(ctx);
+ 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 */
ctx->Color.AlphaFunc = GL_ALWAYS;
ctx->Color.AlphaRef = 0;
ctx->Color.BlendEnabled = 0x0;
- for (i = 0; i < Elements(ctx->Color.Blend); i++) {
+ 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.LogicOp = GL_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._ClampFragmentColor = GL_FALSE;
ctx->Color.ClampReadColor = GL_FIXED_ONLY_ARB;
- if (ctx->API == API_OPENGLES2) {
- /* GLES 3 behaves as though GL_FRAMEBUFFER_SRGB is always enabled. */
- ctx->Color.sRGBEnabled = GL_TRUE;
- } else {
- ctx->Color.sRGBEnabled = GL_FALSE;
- }
+ /* 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);
}
/*@}*/
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