/*
* 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.
*/
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:
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 GL_TRUE;
+ 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 _mesa_is_desktop_gl(ctx)
+ && ctx->Extensions.ARB_blend_func_extended;
default:
return GL_FALSE;
}
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:
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 GL_TRUE;
+ return _mesa_is_desktop_gl(ctx) || ctx->API == API_OPENGLES2;
+ case GL_SRC_ALPHA_SATURATE:
+ return (_mesa_is_desktop_gl(ctx)
+ && 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)
+ && ctx->Extensions.ARB_blend_func_extended;
default:
return GL_FALSE;
}
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;
}
void GLAPIENTRY
_mesa_BlendFunc( GLenum sfactor, GLenum dfactor )
{
- _mesa_BlendFuncSeparateEXT(sfactor, dfactor, sfactor, dfactor);
+ _mesa_BlendFuncSeparate(sfactor, dfactor, sfactor, dfactor);
+}
+
+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));
+}
/**
* Set the separate blend source/dest factors for all draw buffers.
* \param dfactorA alpha destination factor operator.
*/
void GLAPIENTRY
-_mesa_BlendFuncSeparateEXT( GLenum sfactorRGB, GLenum dfactorRGB,
+_mesa_BlendFuncSeparate( GLenum sfactorRGB, GLenum dfactorRGB,
GLenum sfactorA, GLenum dfactorA )
{
GLuint buf, numBuffers;
- GLboolean changed;
+ bool changed = false;
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));
-
- 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].DstRGB = dfactorRGB;
ctx->Color.Blend[buf].SrcA = sfactorA;
ctx->Color.Blend[buf].DstA = dfactorA;
+ update_uses_dual_src(ctx, buf);
}
ctx->Color._BlendFuncPerBuffer = GL_FALSE;
}
-#if _HAVE_FULL_GL
-
-
/**
* Set blend source/dest factors for one color buffer/target.
*/
void GLAPIENTRY
-_mesa_BlendFunci(GLuint buf, GLenum sfactor, GLenum dfactor)
+_mesa_BlendFunciARB(GLuint buf, GLenum sfactor, GLenum dfactor)
{
- _mesa_BlendFuncSeparatei(buf, sfactor, dfactor, sfactor, dfactor);
+ _mesa_BlendFuncSeparateiARB(buf, sfactor, dfactor, sfactor, dfactor);
}
* Set separate blend source/dest factors for one color buffer/target.
*/
void GLAPIENTRY
-_mesa_BlendFuncSeparatei(GLuint buf, GLenum sfactorRGB, GLenum dfactorRGB,
+_mesa_BlendFuncSeparateiARB(GLuint buf, GLenum sfactorRGB, GLenum dfactorRGB,
GLenum sfactorA, GLenum dfactorA)
{
GET_CURRENT_CONTEXT(ctx);
- ASSERT_OUTSIDE_BEGIN_END(ctx);
if (!ctx->Extensions.ARB_draw_buffers_blend) {
_mesa_error(ctx, GL_INVALID_OPERATION, "glBlendFunc[Separate]i()");
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.BlendFuncSeparatei) {
- ctx->Driver.BlendFuncSeparatei(ctx, buf, sfactorRGB, dfactorRGB,
- sfactorA, dfactorA);
- }
}
* \return GL_TRUE if legal, GL_FALSE otherwise.
*/
static GLboolean
-legal_blend_equation(const struct gl_context *ctx,
- GLenum mode, GLboolean is_separate)
+legal_blend_equation(const struct gl_context *ctx, GLenum mode)
{
switch (mode) {
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;
- case GL_LOGIC_OP:
- /* glBlendEquationSeparate cannot take GL_LOGIC_OP as a parameter.
- */
- return ctx->Extensions.EXT_blend_logic_op && !is_separate;
- case GL_FUNC_SUBTRACT:
- case GL_FUNC_REVERSE_SUBTRACT:
- return ctx->Extensions.EXT_blend_subtract;
default:
return GL_FALSE;
}
GLuint buf, numBuffers;
GLboolean changed;
GET_CURRENT_CONTEXT(ctx);
- ASSERT_OUTSIDE_BEGIN_END(ctx);
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, GL_FALSE)) {
+ if (!legal_blend_equation(ctx, mode)) {
_mesa_error(ctx, GL_INVALID_ENUM, "glBlendEquation");
return;
}
* Set blend equation for one color buffer/target.
*/
void GLAPIENTRY
-_mesa_BlendEquationi(GLuint buf, GLenum mode)
+_mesa_BlendEquationiARB(GLuint buf, GLenum mode)
{
GET_CURRENT_CONTEXT(ctx);
- ASSERT_OUTSIDE_BEGIN_END(ctx);
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)",
return;
}
- if (!legal_blend_equation(ctx, mode, GL_FALSE)) {
+ if (!legal_blend_equation(ctx, mode)) {
_mesa_error(ctx, GL_INVALID_ENUM, "glBlendEquationi");
return;
}
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);
}
void GLAPIENTRY
-_mesa_BlendEquationSeparateEXT( GLenum modeRGB, GLenum modeA )
+_mesa_BlendEquationSeparate( GLenum modeRGB, GLenum modeA )
{
GLuint buf, numBuffers;
GLboolean changed;
GET_CURRENT_CONTEXT(ctx);
- ASSERT_OUTSIDE_BEGIN_END(ctx);
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,
return;
}
- if (!legal_blend_equation(ctx, modeRGB, GL_TRUE)) {
+ if (!legal_blend_equation(ctx, modeRGB)) {
_mesa_error(ctx, GL_INVALID_ENUM, "glBlendEquationSeparateEXT(modeRGB)");
return;
}
- if (!legal_blend_equation(ctx, modeA, GL_TRUE)) {
+ if (!legal_blend_equation(ctx, modeA)) {
_mesa_error(ctx, GL_INVALID_ENUM, "glBlendEquationSeparateEXT(modeA)");
return;
}
/**
* Set separate blend equations for one color buffer/target.
*/
-void
-_mesa_BlendEquationSeparatei(GLuint buf, GLenum modeRGB, GLenum modeA)
+void GLAPIENTRY
+_mesa_BlendEquationSeparateiARB(GLuint buf, GLenum modeRGB, GLenum modeA)
{
GET_CURRENT_CONTEXT(ctx);
- ASSERT_OUTSIDE_BEGIN_END(ctx);
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)",
return;
}
- if (!legal_blend_equation(ctx, modeRGB, GL_TRUE)) {
+ if (!legal_blend_equation(ctx, modeRGB)) {
_mesa_error(ctx, GL_INVALID_ENUM, "glBlendEquationSeparatei(modeRGB)");
return;
}
- if (!legal_blend_equation(ctx, modeA, GL_TRUE)) {
+ if (!legal_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);
}
-
-#endif /* _HAVE_FULL_GL */
-
-
/**
* Set the blending color.
*
{
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 );
+ 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_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:
- ref = CLAMP(ref, 0.0F, 1.0F);
-
- if (ctx->Color.AlphaFunc == func && ctx->Color.AlphaRef == ref)
- return; /* no change */
-
FLUSH_VERTICES(ctx, _NEW_COLOR);
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:
_mesa_LogicOp( GLenum opcode )
{
GET_CURRENT_CONTEXT(ctx);
- ASSERT_OUTSIDE_BEGIN_END(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:
ctx->Driver.LogicOpcode( ctx, opcode );
}
-#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);
ctx->Color.IndexMask = mask;
}
-#endif
/**
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",
* For GL_EXT_draw_buffers2 and GL3
*/
void GLAPIENTRY
-_mesa_ColorMaskIndexed( GLuint buf, GLboolean red, GLboolean green,
+_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",
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);
}
-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);
-
if (clamp != GL_TRUE && clamp != GL_FALSE && clamp != GL_FIXED_ONLY_ARB) {
_mesa_error(ctx, GL_INVALID_ENUM, "glClampColorARB(clamp)");
return;
switch (target) {
case GL_CLAMP_VERTEX_COLOR_ARB:
+ if (ctx->API == API_OPENGL_CORE &&
+ !ctx->Extensions.ARB_color_buffer_float) {
+ 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 &&
+ !ctx->Extensions.ARB_color_buffer_float) {
+ 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->_IntegerColor)
+ 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 */
ctx->Color.IndexMask = ~0u;
memset(ctx->Color.ColorMask, 0xff, sizeof(ctx->Color.ColorMask));
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;
- 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.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.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);
}
/*@}*/
projects / mesa.git / blobdiff