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Diffstat (limited to 'src/mesa/swrast/s_drawpix.c')
-rw-r--r--src/mesa/swrast/s_drawpix.c166
1 files changed, 99 insertions, 67 deletions
diff --git a/src/mesa/swrast/s_drawpix.c b/src/mesa/swrast/s_drawpix.c
index d1f2ad8b837..6af80233483 100644
--- a/src/mesa/swrast/s_drawpix.c
+++ b/src/mesa/swrast/s_drawpix.c
@@ -607,7 +607,7 @@ draw_depth_pixels( GLcontext *ctx, GLint x, GLint y,
_mesa_image_address2d(unpack, pixels, width, height,
GL_DEPTH_COMPONENT, type, row, 0);
if (shift == 0) {
- MEMCPY(span.array->z, zSrc, width * sizeof(GLuint));
+ _mesa_memcpy(span.array->z, zSrc, width * sizeof(GLuint));
}
else {
GLint col;
@@ -823,7 +823,14 @@ draw_rgba_pixels( GLcontext *ctx, GLint x, GLint y,
}
-
+/**
+ * This is a bit different from drawing GL_DEPTH_COMPONENT pixels.
+ * The only per-pixel operations that apply are depth scale/bias,
+ * stencil offset/shift, GL_DEPTH_WRITEMASK and GL_STENCIL_WRITEMASK,
+ * and pixel zoom.
+ * Also, only the depth buffer and stencil buffers are touched, not the
+ * color buffer(s).
+ */
static void
draw_depth_stencil_pixels(GLcontext *ctx, GLint x, GLint y,
GLsizei width, GLsizei height, GLenum type,
@@ -840,13 +847,6 @@ draw_depth_stencil_pixels(GLcontext *ctx, GLint x, GLint y,
const GLboolean zoom = ctx->Pixel.ZoomX != 1.0 || ctx->Pixel.ZoomY != 1.0;
struct gl_renderbuffer *depthRb, *stencilRb;
struct gl_pixelstore_attrib clippedUnpack = *unpack;
- GLint i;
-
- depthRb = ctx->DrawBuffer->_DepthBuffer;
- stencilRb = ctx->DrawBuffer->_StencilBuffer;
-
- ASSERT(depthRb);
- ASSERT(stencilRb);
if (!zoom) {
if (!_mesa_clip_drawpixels(ctx, &x, &y, &width, &height,
@@ -855,72 +855,104 @@ draw_depth_stencil_pixels(GLcontext *ctx, GLint x, GLint y,
return;
}
}
+
+ depthRb = ctx->ReadBuffer->Attachment[BUFFER_DEPTH].Renderbuffer;
+ stencilRb = ctx->ReadBuffer->Attachment[BUFFER_STENCIL].Renderbuffer;
+ ASSERT(depthRb);
+ ASSERT(stencilRb);
- /* XXX need to handle very wide images (skippixels) */
-
- for (i = 0; i < height; i++) {
- const GLuint *depthStencilSrc = (const GLuint *)
- _mesa_image_address2d(&clippedUnpack, pixels, width, height,
- GL_DEPTH_STENCIL_EXT, type, i, 0);
-
- if (ctx->Depth.Mask) {
- if (!scaleOrBias && ctx->DrawBuffer->Visual.depthBits == 24) {
- /* fast path 24-bit zbuffer */
- GLuint zValues[MAX_WIDTH];
- GLint j;
- ASSERT(depthRb->DataType == GL_UNSIGNED_INT);
- for (j = 0; j < width; j++) {
- zValues[j] = depthStencilSrc[j] >> 8;
- }
- if (zoom)
- _swrast_write_zoomed_z_span(ctx, imgX, imgY, width,
- x, y + i, zValues);
- else
- depthRb->PutRow(ctx, depthRb, width, x, y + i, zValues, NULL);
- }
- else if (!scaleOrBias && ctx->DrawBuffer->Visual.depthBits == 16) {
- /* fast path 16-bit zbuffer */
- GLushort zValues[MAX_WIDTH];
- GLint j;
- ASSERT(depthRb->DataType == GL_UNSIGNED_SHORT);
- for (j = 0; j < width; j++) {
- zValues[j] = depthStencilSrc[j] >> 16;
+ if (depthRb->_BaseFormat == GL_DEPTH_STENCIL_EXT &&
+ stencilRb->_BaseFormat == GL_DEPTH_STENCIL_EXT &&
+ depthRb == stencilRb &&
+ !scaleOrBias &&
+ !zoom &&
+ ctx->Depth.Mask &&
+ (stencilMask & 0xff) == 0xff) {
+ /* This is the ideal case.
+ * Drawing GL_DEPTH_STENCIL pixels into a combined depth/stencil buffer.
+ * Plus, no pixel transfer ops, zooming, or masking needed.
+ */
+ GLint i;
+ for (i = 0; i < height; i++) {
+ const GLuint *src = (const GLuint *)
+ _mesa_image_address2d(&clippedUnpack, pixels, width, height,
+ GL_DEPTH_STENCIL_EXT, type, i, 0);
+ depthRb->PutRow(ctx, depthRb, width, x, y + i, src, NULL);
+ }
+ }
+ else {
+ /* sub-optimal cases:
+ * Separate depth/stencil buffers, or pixel transfer ops required.
+ */
+ /* XXX need to handle very wide images (skippixels) */
+ GLint i;
+
+ depthRb = ctx->DrawBuffer->_DepthBuffer;
+ stencilRb = ctx->DrawBuffer->_StencilBuffer;
+
+ for (i = 0; i < height; i++) {
+ const GLuint *depthStencilSrc = (const GLuint *)
+ _mesa_image_address2d(&clippedUnpack, pixels, width, height,
+ GL_DEPTH_STENCIL_EXT, type, i, 0);
+
+ if (ctx->Depth.Mask) {
+ if (!scaleOrBias && ctx->DrawBuffer->Visual.depthBits == 24) {
+ /* fast path 24-bit zbuffer */
+ GLuint zValues[MAX_WIDTH];
+ GLint j;
+ ASSERT(depthRb->DataType == GL_UNSIGNED_INT);
+ for (j = 0; j < width; j++) {
+ zValues[j] = depthStencilSrc[j] >> 8;
+ }
+ if (zoom)
+ _swrast_write_zoomed_z_span(ctx, imgX, imgY, width,
+ x, y + i, zValues);
+ else
+ depthRb->PutRow(ctx, depthRb, width, x, y + i, zValues,NULL);
}
- if (zoom)
- _swrast_write_zoomed_z_span(ctx, imgX, imgY, width,
- x, y + i, zValues);
- else
- depthRb->PutRow(ctx, depthRb, width, x, y + i, zValues, NULL);
- }
- else {
- /* general case */
- GLuint zValues[MAX_WIDTH]; /* 16 or 32-bit Z value storage */
- _mesa_unpack_depth_span(ctx, width,
- depthRb->DataType, zValues, depthScale,
- type, depthStencilSrc, &clippedUnpack);
- if (zoom) {
- _swrast_write_zoomed_z_span(ctx, imgX, imgY, width, x,
- y + i, zValues);
+ else if (!scaleOrBias && ctx->DrawBuffer->Visual.depthBits == 16) {
+ /* fast path 16-bit zbuffer */
+ GLushort zValues[MAX_WIDTH];
+ GLint j;
+ ASSERT(depthRb->DataType == GL_UNSIGNED_SHORT);
+ for (j = 0; j < width; j++) {
+ zValues[j] = depthStencilSrc[j] >> 16;
+ }
+ if (zoom)
+ _swrast_write_zoomed_z_span(ctx, imgX, imgY, width,
+ x, y + i, zValues);
+ else
+ depthRb->PutRow(ctx, depthRb, width, x, y + i, zValues,NULL);
}
else {
- depthRb->PutRow(ctx, depthRb, width, x, y + i, zValues, NULL);
+ /* general case */
+ GLuint zValues[MAX_WIDTH]; /* 16 or 32-bit Z value storage */
+ _mesa_unpack_depth_span(ctx, width,
+ depthRb->DataType, zValues, depthScale,
+ type, depthStencilSrc, &clippedUnpack);
+ if (zoom) {
+ _swrast_write_zoomed_z_span(ctx, imgX, imgY, width, x,
+ y + i, zValues);
+ }
+ else {
+ depthRb->PutRow(ctx, depthRb, width, x, y + i, zValues,NULL);
+ }
}
}
- }
- if (stencilMask != 0x0) {
- GLstencil stencilValues[MAX_WIDTH];
- /* get stencil values, with shift/offset/mapping */
- _mesa_unpack_stencil_span(ctx, width, stencilType, stencilValues,
- type, depthStencilSrc, &clippedUnpack,
- ctx->_ImageTransferState);
- if (zoom)
- _swrast_write_zoomed_stencil_span(ctx, imgX, imgY, width,
- x, y + i, stencilValues);
- else
- _swrast_write_stencil_span(ctx, width, x, y + i, stencilValues);
+ if (stencilMask != 0x0) {
+ GLstencil stencilValues[MAX_WIDTH];
+ /* get stencil values, with shift/offset/mapping */
+ _mesa_unpack_stencil_span(ctx, width, stencilType, stencilValues,
+ type, depthStencilSrc, &clippedUnpack,
+ ctx->_ImageTransferState);
+ if (zoom)
+ _swrast_write_zoomed_stencil_span(ctx, imgX, imgY, width,
+ x, y + i, stencilValues);
+ else
+ _swrast_write_stencil_span(ctx, width, x, y + i, stencilValues);
+ }
}
-
}
}
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