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Diffstat (limited to 'src/mesa/main/buffers.c')
-rw-r--r--src/mesa/main/buffers.c149
1 files changed, 1 insertions, 148 deletions
diff --git a/src/mesa/main/buffers.c b/src/mesa/main/buffers.c
index 00f6fb3e64..0c550fd8f1 100644
--- a/src/mesa/main/buffers.c
+++ b/src/mesa/main/buffers.c
@@ -25,7 +25,7 @@
/**
* \file buffers.c
- * General framebuffer-related functions, like glClear, glScissor, etc.
+ * glReadBuffer, DrawBuffer functions.
*/
@@ -42,153 +42,6 @@
#define BAD_MASK ~0u
-#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
-
-
-/**
- * Specify the clear values for the color buffers.
- *
- * \param red red color component.
- * \param green green color component.
- * \param blue blue color component.
- * \param alpha alpha component.
- *
- * \sa glClearColor().
- *
- * Clamps the parameters and updates gl_colorbuffer_attrib::ClearColor. On a
- * change, flushes the vertices and notifies the driver via the
- * dd_function_table::ClearColor callback.
- */
-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);
-
- if (TEST_EQ_4V(tmp, ctx->Color.ClearColor))
- return; /* no change */
-
- FLUSH_VERTICES(ctx, _NEW_COLOR);
- COPY_4V(ctx->Color.ClearColor, tmp);
-
- 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);
- }
-}
-
-
-/**
- * Clear buffers.
- *
- * \param mask bit-mask indicating the buffers to be cleared.
- *
- * Flushes the vertices and verifies the parameter. If __GLcontextRec::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.
- */
-void GLAPIENTRY
-_mesa_Clear( GLbitfield mask )
-{
- GET_CURRENT_CONTEXT(ctx);
- ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);
-
- FLUSH_CURRENT(ctx, 0);
-
- if (MESA_VERBOSE & VERBOSE_API)
- _mesa_debug(ctx, "glClear 0x%x\n", mask);
-
- if (mask & ~(GL_COLOR_BUFFER_BIT |
- GL_DEPTH_BUFFER_BIT |
- GL_STENCIL_BUFFER_BIT |
- GL_ACCUM_BUFFER_BIT)) {
- /* invalid bit set */
- _mesa_error( ctx, GL_INVALID_VALUE, "glClear(0x%x)", mask);
- return;
- }
-
- if (ctx->NewState) {
- _mesa_update_state( ctx ); /* update _Xmin, etc */
- }
-
- if (ctx->DrawBuffer->_Status != GL_FRAMEBUFFER_COMPLETE_EXT) {
- _mesa_error(ctx, GL_INVALID_FRAMEBUFFER_OPERATION_EXT,
- "glClear(incomplete framebuffer)");
- return;
- }
-
- if (ctx->DrawBuffer->Width == 0 || ctx->DrawBuffer->Height == 0 ||
- ctx->DrawBuffer->_Xmin >= ctx->DrawBuffer->_Xmax ||
- ctx->DrawBuffer->_Ymin >= ctx->DrawBuffer->_Ymax)
- return;
-
- if (ctx->RenderMode == GL_RENDER) {
- GLbitfield bufferMask;
-
- /* don't clear depth buffer if depth writing disabled */
- if (!ctx->Depth.Mask)
- mask &= ~GL_DEPTH_BUFFER_BIT;
-
- /* Build the bitmask to send to device driver's Clear function.
- * Note that the GL_COLOR_BUFFER_BIT flag will expand to 0, 1, 2 or 4
- * of the BUFFER_BIT_FRONT/BACK_LEFT/RIGHT flags, or one of the
- * BUFFER_BIT_COLORn flags.
- */
- bufferMask = 0;
- if (mask & GL_COLOR_BUFFER_BIT) {
- GLuint i;
- for (i = 0; i < ctx->DrawBuffer->_NumColorDrawBuffers; i++) {
- bufferMask |= (1 << ctx->DrawBuffer->_ColorDrawBufferIndexes[i]);
- }
- }
-
- if ((mask & GL_DEPTH_BUFFER_BIT)
- && ctx->DrawBuffer->Visual.haveDepthBuffer) {
- bufferMask |= BUFFER_BIT_DEPTH;
- }
-
- if ((mask & GL_STENCIL_BUFFER_BIT)
- && ctx->DrawBuffer->Visual.haveStencilBuffer) {
- bufferMask |= BUFFER_BIT_STENCIL;
- }
-
- if ((mask & GL_ACCUM_BUFFER_BIT)
- && ctx->DrawBuffer->Visual.haveAccumBuffer) {
- bufferMask |= BUFFER_BIT_ACCUM;
- }
-
- ASSERT(ctx->Driver.Clear);
- ctx->Driver.Clear(ctx, bufferMask);
- }
-}
-
-
-
/**
* Return bitmask of BUFFER_BIT_* flags indicating which color buffers are
* available to the rendering context (for drawing or reading).