* 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
+ * THE AUTHORS 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 "context.h"
#include "colormac.h"
#include "enums.h"
+#include "macros.h"
+#include "mtypes.h"
#include "state.h"
-#if _HAVE_FULL_GL
void GLAPIENTRY
_mesa_ClearIndex( GLfloat c )
{
GET_CURRENT_CONTEXT(ctx);
- ASSERT_OUTSIDE_BEGIN_END(ctx);
- if (ctx->Color.ClearIndex == (GLuint) c)
- return;
-
- FLUSH_VERTICES(ctx, _NEW_COLOR);
ctx->Color.ClearIndex = (GLuint) c;
-
- if (!ctx->Visual.rgbMode && ctx->Driver.ClearIndex) {
- /* it's OK to call glClearIndex in RGBA mode but it should be a NOP */
- (*ctx->Driver.ClearIndex)( ctx, ctx->Color.ClearIndex );
- }
}
-#endif
/**
void GLAPIENTRY
_mesa_ClearColor( 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);
+ ctx->Color.ClearColor.f[0] = red;
+ ctx->Color.ClearColor.f[1] = green;
+ ctx->Color.ClearColor.f[2] = blue;
+ ctx->Color.ClearColor.f[3] = alpha;
+}
- if (TEST_EQ_4V(tmp, ctx->Color.ClearColor))
- return; /* no change */
- FLUSH_VERTICES(ctx, _NEW_COLOR);
- COPY_4V(ctx->Color.ClearColor, tmp);
+/**
+ * GL_EXT_texture_integer
+ */
+void GLAPIENTRY
+_mesa_ClearColorIiEXT(GLint r, GLint g, GLint b, GLint a)
+{
+ GET_CURRENT_CONTEXT(ctx);
- if (ctx->Visual.rgbMode && ctx->Driver.ClearColor) {
- /* it's OK to call glClearColor in CI mode but it should be a NOP */
- (*ctx->Driver.ClearColor)(ctx, ctx->Color.ClearColor);
- }
+ ctx->Color.ClearColor.i[0] = r;
+ ctx->Color.ClearColor.i[1] = g;
+ ctx->Color.ClearColor.i[2] = b;
+ ctx->Color.ClearColor.i[3] = a;
+}
+
+
+/**
+ * GL_EXT_texture_integer
+ */
+void GLAPIENTRY
+_mesa_ClearColorIuiEXT(GLuint r, GLuint g, GLuint b, GLuint a)
+{
+ GET_CURRENT_CONTEXT(ctx);
+
+ ctx->Color.ClearColor.ui[0] = r;
+ ctx->Color.ClearColor.ui[1] = g;
+ ctx->Color.ClearColor.ui[2] = b;
+ ctx->Color.ClearColor.ui[3] = a;
}
*
* \param mask bit-mask indicating the buffers to be cleared.
*
- * Flushes the vertices and verifies the parameter. If __GLcontextRec::NewState
+ * Flushes the vertices and verifies the parameter. If __struct gl_contextRec::NewState
* is set then calls _mesa_update_state() to update gl_frame_buffer::_Xmin,
* etc. If the rasterization mode is set to GL_RENDER then requests the driver
* to clear the buffers, via the dd_function_table::Clear callback.
_mesa_Clear( GLbitfield mask )
{
GET_CURRENT_CONTEXT(ctx);
- ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);
+ FLUSH_VERTICES(ctx, 0);
FLUSH_CURRENT(ctx, 0);
return;
}
+ /* Accumulation buffers were removed in core contexts, and they never
+ * existed in OpenGL ES.
+ */
+ if ((mask & GL_ACCUM_BUFFER_BIT) != 0
+ && (ctx->API == API_OPENGL_CORE || _mesa_is_gles(ctx))) {
+ _mesa_error( ctx, GL_INVALID_VALUE, "glClear(GL_ACCUM_BUFFER_BIT)");
+ return;
+ }
+
if (ctx->NewState) {
_mesa_update_state( ctx ); /* update _Xmin, etc */
}
ctx->DrawBuffer->_Ymin >= ctx->DrawBuffer->_Ymax)
return;
+ if (ctx->RasterDiscard)
+ return;
+
if (ctx->RenderMode == GL_RENDER) {
GLbitfield bufferMask;
* Return INVALID_MASK if the drawbuffer value is invalid.
*/
static GLbitfield
-make_color_buffer_mask(GLcontext *ctx, GLint drawbuffer)
+make_color_buffer_mask(struct gl_context *ctx, GLint drawbuffer)
{
const struct gl_renderbuffer_attachment *att = ctx->DrawBuffer->Attachment;
GLbitfield mask = 0x0;
mask |= BUFFER_BIT_BACK_RIGHT;
break;
default:
- if (drawbuffer < 0 || drawbuffer >= ctx->Const.MaxDrawBuffers) {
+ if (drawbuffer < 0 || drawbuffer >= (GLint)ctx->Const.MaxDrawBuffers) {
mask = INVALID_MASK;
}
else if (att[BUFFER_COLOR0 + drawbuffer].Renderbuffer) {
_mesa_ClearBufferiv(GLenum buffer, GLint drawbuffer, const GLint *value)
{
GET_CURRENT_CONTEXT(ctx);
- ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);
+ FLUSH_VERTICES(ctx, 0);
FLUSH_CURRENT(ctx, 0);
- if (!ctx->DrawBuffer->Visual.rgbMode) {
- _mesa_error(ctx, GL_INVALID_OPERATION, "glClearBufferiv()");
- return;
- }
-
if (ctx->NewState) {
_mesa_update_state( ctx );
}
switch (buffer) {
case GL_STENCIL:
+ /* Page 264 (page 280 of the PDF) of the OpenGL 3.0 spec says:
+ *
+ * "ClearBuffer generates an INVALID VALUE error if buffer is
+ * COLOR and drawbuffer is less than zero, or greater than the
+ * value of MAX DRAW BUFFERS minus one; or if buffer is DEPTH,
+ * STENCIL, or DEPTH STENCIL and drawbuffer is not zero."
+ */
if (drawbuffer != 0) {
_mesa_error(ctx, GL_INVALID_VALUE, "glClearBufferiv(drawbuffer=%d)",
drawbuffer);
return;
}
- else {
+ else if (ctx->DrawBuffer->Attachment[BUFFER_STENCIL].Renderbuffer && !ctx->RasterDiscard) {
/* Save current stencil clear value, set to 'value', do the
* stencil clear and restore the clear value.
* XXX in the future we may have a new ctx->Driver.ClearBuffer()
*/
const GLuint clearSave = ctx->Stencil.Clear;
ctx->Stencil.Clear = *value;
- if (ctx->Driver.ClearStencil)
- ctx->Driver.ClearStencil(ctx, *value);
ctx->Driver.Clear(ctx, BUFFER_BIT_STENCIL);
ctx->Stencil.Clear = clearSave;
- if (ctx->Driver.ClearStencil)
- ctx->Driver.ClearStencil(ctx, clearSave);
}
break;
case GL_COLOR:
drawbuffer);
return;
}
- else if (mask) {
- /* XXX note: we're putting the integer clear values into the
- * floating point state var. This will not always work. We'll
- * need a new ctx->Driver.ClearBuffer() hook....
- */
- GLfloat clearSave[4];
+ else if (mask && !ctx->RasterDiscard) {
+ union gl_color_union clearSave;
+
/* save color */
- COPY_4V(clearSave, ctx->Color.ClearColor);
+ clearSave = ctx->Color.ClearColor;
/* set color */
- COPY_4V(ctx->Color.ClearColor, value);
- if (ctx->Driver.ClearColor)
- ctx->Driver.ClearColor(ctx, ctx->Color.ClearColor);
+ COPY_4V(ctx->Color.ClearColor.i, value);
/* clear buffer(s) */
ctx->Driver.Clear(ctx, mask);
/* restore color */
- COPY_4V(ctx->Color.ClearColor, clearSave);
- if (ctx->Driver.ClearColor)
- ctx->Driver.ClearColor(ctx, clearSave);
+ ctx->Color.ClearColor = clearSave;
}
}
break;
+ case GL_DEPTH:
+ /* Page 264 (page 280 of the PDF) of the OpenGL 3.0 spec says:
+ *
+ * "The result of ClearBuffer is undefined if no conversion between
+ * the type of the specified value and the type of the buffer being
+ * cleared is defined (for example, if ClearBufferiv is called for a
+ * fixed- or floating-point buffer, or if ClearBufferfv is called
+ * for a signed or unsigned integer buffer). This is not an error."
+ *
+ * In this case we take "undefined" and "not an error" to mean "ignore."
+ * Note that we still need to generate an error for the invalid
+ * drawbuffer case (see the GL_STENCIL case above).
+ */
+ if (drawbuffer != 0) {
+ _mesa_error(ctx, GL_INVALID_VALUE, "glClearBufferiv(drawbuffer=%d)",
+ drawbuffer);
+ return;
+ }
+ return;
default:
_mesa_error(ctx, GL_INVALID_ENUM, "glClearBufferiv(buffer=%s)",
_mesa_lookup_enum_by_nr(buffer));
_mesa_ClearBufferuiv(GLenum buffer, GLint drawbuffer, const GLuint *value)
{
GET_CURRENT_CONTEXT(ctx);
- ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);
+ FLUSH_VERTICES(ctx, 0);
FLUSH_CURRENT(ctx, 0);
- if (!ctx->DrawBuffer->Visual.rgbMode) {
- _mesa_error(ctx, GL_INVALID_OPERATION, "glClearBufferuiv()");
- return;
- }
-
if (ctx->NewState) {
_mesa_update_state( ctx );
}
{
const GLbitfield mask = make_color_buffer_mask(ctx, drawbuffer);
if (mask == INVALID_MASK) {
- _mesa_error(ctx, GL_INVALID_VALUE, "glClearBufferiv(drawbuffer=%d)",
+ _mesa_error(ctx, GL_INVALID_VALUE, "glClearBufferuiv(drawbuffer=%d)",
drawbuffer);
return;
}
- else if (mask) {
- /* XXX note: we're putting the uint clear values into the
- * floating point state var. This will not always work. We'll
- * need a new ctx->Driver.ClearBuffer() hook....
- */
- GLfloat clearSave[4];
+ else if (mask && !ctx->RasterDiscard) {
+ union gl_color_union clearSave;
+
/* save color */
- COPY_4V(clearSave, ctx->Color.ClearColor);
+ clearSave = ctx->Color.ClearColor;
/* set color */
- COPY_4V(ctx->Color.ClearColor, value);
- if (ctx->Driver.ClearColor)
- ctx->Driver.ClearColor(ctx, ctx->Color.ClearColor);
+ COPY_4V(ctx->Color.ClearColor.ui, value);
/* clear buffer(s) */
ctx->Driver.Clear(ctx, mask);
/* restore color */
- COPY_4V(ctx->Color.ClearColor, clearSave);
- if (ctx->Driver.ClearColor)
- ctx->Driver.ClearColor(ctx, clearSave);
+ ctx->Color.ClearColor = clearSave;
}
}
break;
+ case GL_DEPTH:
+ case GL_STENCIL:
+ /* Page 264 (page 280 of the PDF) of the OpenGL 3.0 spec says:
+ *
+ * "The result of ClearBuffer is undefined if no conversion between
+ * the type of the specified value and the type of the buffer being
+ * cleared is defined (for example, if ClearBufferiv is called for a
+ * fixed- or floating-point buffer, or if ClearBufferfv is called
+ * for a signed or unsigned integer buffer). This is not an error."
+ *
+ * In this case we take "undefined" and "not an error" to mean "ignore."
+ * Even though we could do something sensible for GL_STENCIL, page 263
+ * (page 279 of the PDF) says:
+ *
+ * "Only ClearBufferiv should be used to clear stencil buffers."
+ *
+ * Note that we still need to generate an error for the invalid
+ * drawbuffer case (see the GL_STENCIL case in _mesa_ClearBufferiv).
+ */
+ if (drawbuffer != 0) {
+ _mesa_error(ctx, GL_INVALID_VALUE, "glClearBufferuiv(drawbuffer=%d)",
+ drawbuffer);
+ return;
+ }
+ return;
default:
_mesa_error(ctx, GL_INVALID_ENUM, "glClearBufferuiv(buffer=%s)",
_mesa_lookup_enum_by_nr(buffer));
_mesa_ClearBufferfv(GLenum buffer, GLint drawbuffer, const GLfloat *value)
{
GET_CURRENT_CONTEXT(ctx);
- ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);
+ FLUSH_VERTICES(ctx, 0);
FLUSH_CURRENT(ctx, 0);
- if (!ctx->DrawBuffer->Visual.rgbMode) {
- _mesa_error(ctx, GL_INVALID_OPERATION, "glClearBufferfv()");
- return;
- }
-
if (ctx->NewState) {
_mesa_update_state( ctx );
}
switch (buffer) {
case GL_DEPTH:
+ /* Page 264 (page 280 of the PDF) of the OpenGL 3.0 spec says:
+ *
+ * "ClearBuffer generates an INVALID VALUE error if buffer is
+ * COLOR and drawbuffer is less than zero, or greater than the
+ * value of MAX DRAW BUFFERS minus one; or if buffer is DEPTH,
+ * STENCIL, or DEPTH STENCIL and drawbuffer is not zero."
+ */
if (drawbuffer != 0) {
_mesa_error(ctx, GL_INVALID_VALUE, "glClearBufferfv(drawbuffer=%d)",
drawbuffer);
return;
}
- else {
+ else if (ctx->DrawBuffer->Attachment[BUFFER_DEPTH].Renderbuffer && !ctx->RasterDiscard) {
/* Save current depth clear value, set to 'value', do the
* depth clear and restore the clear value.
* XXX in the future we may have a new ctx->Driver.ClearBuffer()
* hook instead.
*/
- const GLfloat clearSave = ctx->Depth.Clear;
+ const GLclampd clearSave = ctx->Depth.Clear;
ctx->Depth.Clear = *value;
- if (ctx->Driver.ClearDepth)
- ctx->Driver.ClearDepth(ctx, *value);
ctx->Driver.Clear(ctx, BUFFER_BIT_DEPTH);
ctx->Depth.Clear = clearSave;
- if (ctx->Driver.ClearDepth)
- ctx->Driver.ClearDepth(ctx, clearSave);
}
/* clear depth buffer to value */
break;
drawbuffer);
return;
}
- else if (mask) {
- GLfloat clearSave[4];
+ else if (mask && !ctx->RasterDiscard) {
+ union gl_color_union clearSave;
+
/* save color */
- COPY_4V(clearSave, ctx->Color.ClearColor);
+ clearSave = ctx->Color.ClearColor;
/* set color */
- COPY_4V(ctx->Color.ClearColor, value);
- if (ctx->Driver.ClearColor)
- ctx->Driver.ClearColor(ctx, ctx->Color.ClearColor);
+ COPY_4V(ctx->Color.ClearColor.f, value);
/* clear buffer(s) */
ctx->Driver.Clear(ctx, mask);
/* restore color */
- COPY_4V(ctx->Color.ClearColor, clearSave);
- if (ctx->Driver.ClearColor)
- ctx->Driver.ClearColor(ctx, clearSave);
+ ctx->Color.ClearColor = clearSave;
}
}
break;
+ case GL_STENCIL:
+ /* Page 264 (page 280 of the PDF) of the OpenGL 3.0 spec says:
+ *
+ * "The result of ClearBuffer is undefined if no conversion between
+ * the type of the specified value and the type of the buffer being
+ * cleared is defined (for example, if ClearBufferiv is called for a
+ * fixed- or floating-point buffer, or if ClearBufferfv is called
+ * for a signed or unsigned integer buffer). This is not an error."
+ *
+ * In this case we take "undefined" and "not an error" to mean "ignore."
+ * Note that we still need to generate an error for the invalid
+ * drawbuffer case (see the GL_DEPTH case above).
+ */
+ if (drawbuffer != 0) {
+ _mesa_error(ctx, GL_INVALID_VALUE, "glClearBufferfv(drawbuffer=%d)",
+ drawbuffer);
+ return;
+ }
+ return;
default:
_mesa_error(ctx, GL_INVALID_ENUM, "glClearBufferfv(buffer=%s)",
_mesa_lookup_enum_by_nr(buffer));
GLfloat depth, GLint stencil)
{
GET_CURRENT_CONTEXT(ctx);
- ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);
+ GLbitfield mask = 0;
+ FLUSH_VERTICES(ctx, 0);
FLUSH_CURRENT(ctx, 0);
- if (!ctx->DrawBuffer->Visual.rgbMode) {
- _mesa_error(ctx, GL_INVALID_OPERATION, "glClearBufferfi()");
- return;
- }
-
if (buffer != GL_DEPTH_STENCIL) {
_mesa_error(ctx, GL_INVALID_ENUM, "glClearBufferfi(buffer=%s)",
_mesa_lookup_enum_by_nr(buffer));
return;
}
+ /* Page 264 (page 280 of the PDF) of the OpenGL 3.0 spec says:
+ *
+ * "ClearBuffer generates an INVALID VALUE error if buffer is
+ * COLOR and drawbuffer is less than zero, or greater than the
+ * value of MAX DRAW BUFFERS minus one; or if buffer is DEPTH,
+ * STENCIL, or DEPTH STENCIL and drawbuffer is not zero."
+ */
if (drawbuffer != 0) {
_mesa_error(ctx, GL_INVALID_VALUE, "glClearBufferfi(drawbuffer=%d)",
drawbuffer);
return;
}
+ if (ctx->RasterDiscard)
+ return;
+
if (ctx->NewState) {
_mesa_update_state( ctx );
}
- {
+ if (ctx->DrawBuffer->Attachment[BUFFER_DEPTH].Renderbuffer)
+ mask |= BUFFER_BIT_DEPTH;
+ if (ctx->DrawBuffer->Attachment[BUFFER_STENCIL].Renderbuffer)
+ mask |= BUFFER_BIT_STENCIL;
+
+ if (mask) {
/* save current clear values */
- const GLfloat clearDepthSave = ctx->Depth.Clear;
+ const GLclampd clearDepthSave = ctx->Depth.Clear;
const GLuint clearStencilSave = ctx->Stencil.Clear;
/* set new clear values */
ctx->Depth.Clear = depth;
ctx->Stencil.Clear = stencil;
- if (ctx->Driver.ClearDepth)
- ctx->Driver.ClearDepth(ctx, depth);
- if (ctx->Driver.ClearStencil)
- ctx->Driver.ClearStencil(ctx, stencil);
/* clear buffers */
- ctx->Driver.Clear(ctx, BUFFER_BIT_DEPTH | BUFFER_BIT_STENCIL);
+ ctx->Driver.Clear(ctx, mask);
/* restore */
ctx->Depth.Clear = clearDepthSave;
ctx->Stencil.Clear = clearStencilSave;
- if (ctx->Driver.ClearDepth)
- ctx->Driver.ClearDepth(ctx, clearDepthSave);
- if (ctx->Driver.ClearStencil)
- ctx->Driver.ClearStencil(ctx, clearStencilSave);
}
}
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