diff options
author | Brian Paul <brian.paul@tungstengraphics.com> | 2005-05-04 20:11:35 +0000 |
---|---|---|
committer | Brian Paul <brian.paul@tungstengraphics.com> | 2005-05-04 20:11:35 +0000 |
commit | e4b2356c07d31fbeeabb13b2fb47db703b473080 (patch) | |
tree | d8b7f1c7c9e7c84d84349485f942dd205dd4c16d /src/mesa/swrast/s_copypix.c | |
parent | ebef61f5c0950572f9c6a81b08f447957461675c (diff) |
Major check-in of changes for GL_EXT_framebuffer_object extension.
Main driver impacts:
- new code for creating the Mesa GLframebuffer
- new span/pixel read/write code
Some drivers not yet updated/tested.
Diffstat (limited to 'src/mesa/swrast/s_copypix.c')
-rw-r--r-- | src/mesa/swrast/s_copypix.c | 82 |
1 files changed, 63 insertions, 19 deletions
diff --git a/src/mesa/swrast/s_copypix.c b/src/mesa/swrast/s_copypix.c index 7454cfd2d2..3d6d91de51 100644 --- a/src/mesa/swrast/s_copypix.c +++ b/src/mesa/swrast/s_copypix.c @@ -131,6 +131,7 @@ copy_conv_rgba_pixels(GLcontext *ctx, GLint srcx, GLint srcy, GLint width, GLint height, GLint destx, GLint desty) { SWcontext *swrast = SWRAST_CONTEXT(ctx); + struct gl_renderbuffer *drawRb = NULL; GLboolean quick_draw; GLint row; GLboolean changeBuffer; @@ -152,6 +153,7 @@ copy_conv_rgba_pixels(GLcontext *ctx, GLint srcx, GLint srcy, && destx >= 0 && destx + width <= (GLint) ctx->DrawBuffer->Width) { quick_draw = GL_TRUE; + drawRb = ctx->DrawBuffer->_ColorDrawBuffers[0][0]; } else { quick_draw = GL_FALSE; @@ -185,8 +187,8 @@ copy_conv_rgba_pixels(GLcontext *ctx, GLint srcx, GLint srcy, for (row = 0; row < height; row++) { GLchan rgba[MAX_WIDTH][4]; /* Read GLchan and convert to GLfloat */ - _swrast_read_rgba_span(ctx, ctx->ReadBuffer, width, srcx, - srcy + row, rgba); + _swrast_read_rgba_span(ctx, ctx->ReadBuffer->_ColorReadBuffer, + width, srcx, srcy + row, rgba); chan_span_to_float(width, (CONST GLchan (*)[4]) rgba, (GLfloat (*)[4]) dest); dest += 4 * width; @@ -240,8 +242,14 @@ copy_conv_rgba_pixels(GLcontext *ctx, GLint srcx, GLint srcy, dy = desty + row; if (quick_draw && dy >= 0 && dy < (GLint) ctx->DrawBuffer->Height) { - (*swrast->Driver.WriteRGBASpan)( ctx, width, destx, dy, - (const GLchan (*)[4])span.array->rgba, NULL ); +#if OLD_RENDERBUFFER + if (swrast->Driver.WriteRGBASpan) + swrast->Driver.WriteRGBASpan(ctx, drawRb, width, destx, dy, + (const GLchan (*)[4]) span.array->rgba, NULL); + else +#endif + drawRb->PutRow(ctx, drawRb, width, destx, dy, + span.array->rgba, NULL); } else if (zoom) { span.x = destx; @@ -271,6 +279,7 @@ copy_rgba_pixels(GLcontext *ctx, GLint srcx, GLint srcy, GLint width, GLint height, GLint destx, GLint desty) { SWcontext *swrast = SWRAST_CONTEXT(ctx); + struct gl_renderbuffer *drawRb; GLchan *tmpImage,*p; GLboolean quick_draw; GLint sy, dy, stepy, j; @@ -280,6 +289,11 @@ copy_rgba_pixels(GLcontext *ctx, GLint srcx, GLint srcy, const GLuint transferOps = ctx->_ImageTransferState; struct sw_span span; + if (!ctx->ReadBuffer->_ColorReadBuffer) { + /* no readbuffer - OK */ + return; + } + INIT_SPAN(span, GL_BITMAP, 0, 0, SPAN_RGBA); if (ctx->Pixel.Convolution2DEnabled || ctx->Pixel.Separable2DEnabled) { @@ -319,9 +333,11 @@ copy_rgba_pixels(GLcontext *ctx, GLint srcx, GLint srcy, && destx >= 0 && destx + width <= (GLint) ctx->DrawBuffer->Width) { quick_draw = GL_TRUE; + drawRb = ctx->DrawBuffer->_ColorDrawBuffers[0][0]; } else { quick_draw = GL_FALSE; + drawRb = NULL; } /* If read and draw buffer are different we must do buffer switching */ @@ -341,8 +357,8 @@ copy_rgba_pixels(GLcontext *ctx, GLint srcx, GLint srcy, /* read the source image */ p = tmpImage; for (j = 0; j < height; j++, ssy += stepy) { - _swrast_read_rgba_span( ctx, ctx->ReadBuffer, width, srcx, ssy, - (GLchan (*)[4]) p ); + _swrast_read_rgba_span( ctx, ctx->ReadBuffer->_ColorReadBuffer, + width, srcx, ssy, (GLchan (*)[4]) p ); p += width * 4; } p = tmpImage; @@ -370,8 +386,8 @@ copy_rgba_pixels(GLcontext *ctx, GLint srcx, GLint srcy, if (changeBuffer) _swrast_use_read_buffer(ctx); ASSERT(width < MAX_WIDTH); - _swrast_read_rgba_span( ctx, ctx->ReadBuffer, width, srcx, sy, - span.array->rgba ); + _swrast_read_rgba_span( ctx, ctx->ReadBuffer->_ColorReadBuffer, + width, srcx, sy, span.array->rgba ); if (changeBuffer) _swrast_use_draw_buffer(ctx); } @@ -397,8 +413,14 @@ copy_rgba_pixels(GLcontext *ctx, GLint srcx, GLint srcy, /* Write color span */ if (quick_draw && dy >= 0 && dy < (GLint) ctx->DrawBuffer->Height) { - (*swrast->Driver.WriteRGBASpan)( ctx, width, destx, dy, - (const GLchan (*)[4])span.array->rgba, NULL ); +#if OLD_RENDERBUFFER + if (swrast->Driver.WriteRGBASpan) + swrast->Driver.WriteRGBASpan(ctx, drawRb, width, destx, dy, + (const GLchan (*)[4])span.array->rgba, NULL); + else +#endif + drawRb->PutRow(ctx, drawRb, width, destx, dy, span.array->rgba, NULL); + } else if (zoom) { span.x = destx; @@ -435,6 +457,11 @@ copy_ci_pixels( GLcontext *ctx, GLint srcx, GLint srcy, GLint overlapping; struct sw_span span; + if (!ctx->ReadBuffer->_ColorReadBuffer) { + /* no readbuffer - OK */ + return; + } + INIT_SPAN(span, GL_BITMAP, 0, 0, SPAN_INDEX); /* Determine if copy should be bottom-to-top or top-to-bottom */ @@ -481,7 +508,8 @@ copy_ci_pixels( GLcontext *ctx, GLint srcx, GLint srcy, /* read the image */ p = tmpImage; for (j = 0; j < height; j++, ssy += stepy) { - _swrast_read_index_span( ctx, ctx->ReadBuffer, width, srcx, ssy, p ); + _swrast_read_index_span( ctx, ctx->ReadBuffer->_ColorReadBuffer, + width, srcx, ssy, p ); p += width; } p = tmpImage; @@ -505,8 +533,8 @@ copy_ci_pixels( GLcontext *ctx, GLint srcx, GLint srcy, else { if (changeBuffer) _swrast_use_read_buffer(ctx); - _swrast_read_index_span( ctx, ctx->ReadBuffer, width, srcx, sy, - span.array->index ); + _swrast_read_index_span( ctx, ctx->ReadBuffer->_ColorReadBuffer, + width, srcx, sy, span.array->index ); if (changeBuffer) _swrast_use_draw_buffer(ctx); } @@ -543,6 +571,9 @@ copy_depth_pixels( GLcontext *ctx, GLint srcx, GLint srcy, GLint width, GLint height, GLint destx, GLint desty ) { + const GLfloat depthMax = ctx->DrawBuffer->_DepthMaxF; + struct gl_renderbuffer *readRb + = ctx->ReadBuffer->Attachment[BUFFER_DEPTH].Renderbuffer; GLfloat *p, *tmpImage; GLint sy, dy, stepy; GLint i, j; @@ -550,6 +581,11 @@ copy_depth_pixels( GLcontext *ctx, GLint srcx, GLint srcy, GLint overlapping; struct sw_span span; + if (!readRb) { + /* no readbuffer - OK */ + return; + } + INIT_SPAN(span, GL_BITMAP, 0, 0, SPAN_Z); if (!ctx->Visual.depthBits) { @@ -592,7 +628,7 @@ copy_depth_pixels( GLcontext *ctx, GLint srcx, GLint srcy, } p = tmpImage; for (j = 0; j < height; j++, ssy += stepy) { - _swrast_read_depth_span_float(ctx, width, srcx, ssy, p); + _swrast_read_depth_span_float(ctx, readRb, width, srcx, ssy, p); p += width; } p = tmpImage; @@ -604,20 +640,21 @@ copy_depth_pixels( GLcontext *ctx, GLint srcx, GLint srcy, for (j = 0; j < height; j++, sy += stepy, dy += stepy) { GLfloat depth[MAX_WIDTH]; - + float sum = 0; /* get depth values */ if (overlapping) { MEMCPY(depth, p, width * sizeof(GLfloat)); p += width; } else { - _swrast_read_depth_span_float(ctx, width, srcx, sy, depth); + _swrast_read_depth_span_float(ctx, readRb, width, srcx, sy, depth); } /* apply scale and bias */ for (i = 0; i < width; i++) { GLfloat d = depth[i] * ctx->Pixel.DepthScale + ctx->Pixel.DepthBias; - span.array->z[i] = (GLdepth) (CLAMP(d, 0.0F, 1.0F) * ctx->DepthMax); + sum += d; + span.array->z[i] = (GLdepth) (CLAMP(d, 0.0F, 1.0F) * depthMax); } /* write depth values */ @@ -650,6 +687,8 @@ copy_stencil_pixels( GLcontext *ctx, GLint srcx, GLint srcy, GLint width, GLint height, GLint destx, GLint desty ) { + struct gl_renderbuffer *rb + = ctx->ReadBuffer->Attachment[BUFFER_STENCIL].Renderbuffer; GLint sy, dy, stepy; GLint j; GLstencil *p, *tmpImage; @@ -662,6 +701,11 @@ copy_stencil_pixels( GLcontext *ctx, GLint srcx, GLint srcy, return; } + if (!rb) { + /* no readbuffer - OK */ + return; + } + /* Determine if copy should be bottom-to-top or top-to-bottom */ if (srcy < desty) { /* top-down max-to-min */ @@ -693,7 +737,7 @@ copy_stencil_pixels( GLcontext *ctx, GLint srcx, GLint srcy, } p = tmpImage; for (j = 0; j < height; j++, ssy += stepy) { - _swrast_read_stencil_span( ctx, width, srcx, ssy, p ); + _swrast_read_stencil_span( ctx, rb, width, srcx, ssy, p ); p += width; } p = tmpImage; @@ -712,7 +756,7 @@ copy_stencil_pixels( GLcontext *ctx, GLint srcx, GLint srcy, p += width; } else { - _swrast_read_stencil_span( ctx, width, srcx, sy, stencil ); + _swrast_read_stencil_span( ctx, rb, width, srcx, sy, stencil ); } /* Apply shift, offset, look-up table */ |