#include "main/glheader.h"
#include "main/colormac.h"
-#include "main/formats.h"
+#include "main/condrender.h"
#include "main/macros.h"
#include "main/imports.h"
#include "main/mtypes.h"
* Clear the color buffer when glColorMask is in effect.
*/
static void
-clear_rgba_buffer_with_masking(GLcontext *ctx, struct gl_renderbuffer *rb)
+clear_rgba_buffer_with_masking(struct gl_context *ctx, struct gl_renderbuffer *rb,
+ GLuint buf)
{
const GLint x = ctx->DrawBuffer->_Xmin;
const GLint y = ctx->DrawBuffer->_Ymin;
SWspan span;
GLint i;
- ASSERT(ctx->Visual.rgbMode);
ASSERT(rb->PutRow);
/* Initialize color span with clear color */
UNCLAMPED_FLOAT_TO_USHORT(clearColor[BCOMP], ctx->Color.ClearColor[2]);
UNCLAMPED_FLOAT_TO_USHORT(clearColor[ACOMP], ctx->Color.ClearColor[3]);
for (i = 0; i < width; i++) {
- COPY_4V(span.array->rgba[i], clearColor);
+ COPY_4V_CAST(span.array->rgba[i], clearColor, GLchan);
}
}
else {
for (i = 0; i < height; i++) {
span.x = x;
span.y = y + i;
- _swrast_mask_rgba_span(ctx, rb, &span);
+ _swrast_mask_rgba_span(ctx, rb, &span, buf);
/* write masked row */
rb->PutRow(ctx, rb, width, x, y + i, span.array->rgba, NULL);
}
}
-/**
- * Clear color index buffer with masking.
- */
-static void
-clear_ci_buffer_with_masking(GLcontext *ctx, struct gl_renderbuffer *rb)
-{
- const GLint x = ctx->DrawBuffer->_Xmin;
- const GLint y = ctx->DrawBuffer->_Ymin;
- const GLint height = ctx->DrawBuffer->_Ymax - ctx->DrawBuffer->_Ymin;
- const GLint width = ctx->DrawBuffer->_Xmax - ctx->DrawBuffer->_Xmin;
- SWspan span;
- GLint i;
-
- ASSERT(!ctx->Visual.rgbMode);
- ASSERT(rb->PutRow);
- ASSERT(rb->DataType == GL_UNSIGNED_INT);
-
- /* Initialize index span with clear index */
- INIT_SPAN(span, GL_BITMAP);
- span.end = width;
- span.arrayMask = SPAN_INDEX;
- for (i = 0; i < width;i++) {
- span.array->index[i] = ctx->Color.ClearIndex;
- }
-
- /* Note that masking will change the color indexes, but only the
- * bits for which the write mask is GL_FALSE. The bits
- * which are write-enabled won't get modified.
- */
- for (i = 0; i < height;i++) {
- span.x = x;
- span.y = y + i;
- _swrast_mask_ci_span(ctx, rb, &span);
- /* write masked row */
- rb->PutRow(ctx, rb, width, x, y + i, span.array->index, NULL);
- }
-}
-
-
/**
* Clear an rgba color buffer without channel masking.
*/
static void
-clear_rgba_buffer(GLcontext *ctx, struct gl_renderbuffer *rb)
+clear_rgba_buffer(struct gl_context *ctx, struct gl_renderbuffer *rb, GLuint buf)
{
const GLint x = ctx->DrawBuffer->_Xmin;
const GLint y = ctx->DrawBuffer->_Ymin;
GLvoid *clearVal;
GLint i;
- ASSERT(ctx->Visual.rgbMode);
-
- ASSERT(ctx->Color.ColorMask[0] &&
- ctx->Color.ColorMask[1] &&
- ctx->Color.ColorMask[2] &&
- ctx->Color.ColorMask[3]);
+ ASSERT(ctx->Color.ColorMask[buf][0] &&
+ ctx->Color.ColorMask[buf][1] &&
+ ctx->Color.ColorMask[buf][2] &&
+ ctx->Color.ColorMask[buf][3]);
ASSERT(rb->PutMonoRow);
}
-/**
- * Clear color index buffer without masking.
- */
-static void
-clear_ci_buffer(GLcontext *ctx, struct gl_renderbuffer *rb)
-{
- const GLint x = ctx->DrawBuffer->_Xmin;
- const GLint y = ctx->DrawBuffer->_Ymin;
- const GLint height = ctx->DrawBuffer->_Ymax - ctx->DrawBuffer->_Ymin;
- const GLint width = ctx->DrawBuffer->_Xmax - ctx->DrawBuffer->_Xmin;
- GLubyte clear8;
- GLushort clear16;
- GLuint clear32;
- GLvoid *clearVal;
- GLint i;
-
- ASSERT(!ctx->Visual.rgbMode);
-
- ASSERT(rb->PutMonoRow);
-
- /* setup clear value */
- switch (rb->DataType) {
- case GL_UNSIGNED_BYTE:
- clear8 = (GLubyte) ctx->Color.ClearIndex;
- clearVal = &clear8;
- break;
- case GL_UNSIGNED_SHORT:
- clear16 = (GLushort) ctx->Color.ClearIndex;
- clearVal = &clear16;
- break;
- case GL_UNSIGNED_INT:
- clear32 = ctx->Color.ClearIndex;
- clearVal = &clear32;
- break;
- default:
- _mesa_problem(ctx, "Bad rb DataType in clear_color_buffer");
- return;
- }
-
- for (i = 0; i < height; i++)
- rb->PutMonoRow(ctx, rb, width, x, y + i, clearVal, NULL);
-}
-
-
/**
* Clear the front/back/left/right/aux color buffers.
* This function is usually only called if the device driver can't
* clear its own color buffers for some reason (such as with masking).
*/
static void
-clear_color_buffers(GLcontext *ctx)
+clear_color_buffers(struct gl_context *ctx)
{
- GLboolean masking;
GLuint buf;
- if (ctx->Visual.rgbMode) {
- if (ctx->Color.ColorMask[0] &&
- ctx->Color.ColorMask[1] &&
- ctx->Color.ColorMask[2] &&
- ctx->Color.ColorMask[3]) {
- masking = GL_FALSE;
- }
- else {
- masking = GL_TRUE;
- }
- }
- else {
- struct gl_renderbuffer *rb = ctx->DrawBuffer->_ColorDrawBuffers[0];
- const GLuint indexMask = (1 << _mesa_get_format_bits(rb->Format, GL_INDEX_BITS)) - 1;
- if ((ctx->Color.IndexMask & indexMask) == indexMask) {
- masking = GL_FALSE;
- }
- else {
- masking = GL_TRUE;
- }
- }
-
for (buf = 0; buf < ctx->DrawBuffer->_NumColorDrawBuffers; buf++) {
struct gl_renderbuffer *rb = ctx->DrawBuffer->_ColorDrawBuffers[buf];
- if (ctx->Visual.rgbMode) {
- if (masking) {
- clear_rgba_buffer_with_masking(ctx, rb);
- }
- else {
- clear_rgba_buffer(ctx, rb);
- }
+
+ /* If this is an ES2 context or GL_ARB_ES2_compatibility is supported,
+ * the framebuffer can be complete with some attachments be missing. In
+ * this case the _ColorDrawBuffers pointer will be NULL.
+ */
+ if (rb == NULL)
+ continue;
+
+ if (ctx->Color.ColorMask[buf][0] == 0 ||
+ ctx->Color.ColorMask[buf][1] == 0 ||
+ ctx->Color.ColorMask[buf][2] == 0 ||
+ ctx->Color.ColorMask[buf][3] == 0) {
+ clear_rgba_buffer_with_masking(ctx, rb, buf);
}
else {
- if (masking) {
- clear_ci_buffer_with_masking(ctx, rb);
- }
- else {
- clear_ci_buffer(ctx, rb);
- }
+ clear_rgba_buffer(ctx, rb, buf);
}
}
}
* \param all if GL_TRUE, clear whole buffer, else clear specified region.
*/
void
-_swrast_Clear(GLcontext *ctx, GLbitfield buffers)
+_swrast_Clear(struct gl_context *ctx, GLbitfield buffers)
{
#ifdef DEBUG_FOO
{
}
#endif
+ if (!_mesa_check_conditional_render(ctx))
+ return; /* don't clear */
+
swrast_render_start(ctx);
/* do software clearing here */
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