mirror of
https://gitlab.freedesktop.org/mesa/mesa.git
synced 2025-12-27 04:00:10 +01:00
Reworked to use the new software rasterizer. Optimized line/tri functions
are hooked into the software rasterizer.
This commit is contained in:
Keith Whitwell
parent
ec0585883a
commit
1e885f6e6c
1 changed files with 116 additions and 46 deletions
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@ -1,4 +1,4 @@
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/* $Id: osmesa.c,v 1.25 2000/10/31 18:09:46 keithw Exp $ */
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/* $Id: osmesa.c,v 1.26 2000/11/05 18:28:01 keithw Exp $ */
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/*
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* Mesa 3-D graphics library
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@ -48,7 +48,12 @@
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#include "types.h"
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#include "vb.h"
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#include "extensions.h"
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#include "swrast/swrast.h"
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#include "swrast_setup/swrast_setup.h"
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#include "swrast/s_context.h"
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#include "swrast/s_depth.h"
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#include "swrast/s_lines.h"
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#include "swrast/s_triangle.h"
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#endif
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@ -84,6 +89,7 @@ struct osmesa_context {
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/* A forward declaration: */
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static void osmesa_update_state( GLcontext *ctx );
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static void osmesa_register_swrast_functions( GLcontext *ctx );
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@ -297,6 +303,21 @@ OSMesaCreateContextExt( GLenum format, GLint depthBits, GLint stencilBits,
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osmesa->rind = rind;
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osmesa->gind = gind;
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osmesa->bind = bind;
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/* Initialize the software rasterizer and helper modules.
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*/
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{
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GLcontext *ctx = &osmesa->gl_ctx;
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_swrast_CreateContext( ctx );
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_swsetup_CreateContext( ctx );
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if (ctx->VB)
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_swsetup_RegisterVB( ctx->VB );
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osmesa_register_swrast_functions( ctx );
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}
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}
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return osmesa;
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}
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@ -1228,10 +1249,10 @@ static void read_index_pixels( const GLcontext *ctx,
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* Draw a flat-shaded, RGB line into an osmesa buffer.
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*/
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static void flat_rgba_line( GLcontext *ctx,
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GLuint vert0, GLuint vert1, GLuint pvert )
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SWvertex *vert0, SWvertex *vert1 )
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{
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OSMesaContext osmesa = (OSMesaContext) ctx;
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GLubyte *color = ctx->VB->ColorPtr->data[pvert];
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GLubyte *color = vert0->color;
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unsigned long pixel = PACK_RGBA( color[0], color[1], color[2], color[3] );
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#define INTERP_XY 1
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@ -1250,10 +1271,10 @@ static void flat_rgba_line( GLcontext *ctx,
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* Draw a flat-shaded, Z-less, RGB line into an osmesa buffer.
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*/
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static void flat_rgba_z_line( GLcontext *ctx,
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GLuint vert0, GLuint vert1, GLuint pvert )
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SWvertex *vert0, SWvertex *vert1 )
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{
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OSMesaContext osmesa = (OSMesaContext) ctx;
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GLubyte *color = ctx->VB->ColorPtr->data[pvert];
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GLubyte *color = vert0->color;
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unsigned long pixel = PACK_RGBA( color[0], color[1], color[2], color[3] );
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#define INTERP_XY 1
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@ -1279,18 +1300,18 @@ static void flat_rgba_z_line( GLcontext *ctx,
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* Draw a flat-shaded, alpha-blended, RGB line into an osmesa buffer.
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*/
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static void flat_blend_rgba_line( GLcontext *ctx,
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GLuint vert0, GLuint vert1, GLuint pvert )
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SWvertex *vert0, SWvertex *vert1 )
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{
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OSMesaContext osmesa = (OSMesaContext) ctx;
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struct vertex_buffer *VB = ctx->VB;
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GLint rshift = osmesa->rshift;
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GLint gshift = osmesa->gshift;
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GLint bshift = osmesa->bshift;
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GLint avalue = VB->ColorPtr->data[pvert][3];
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GLint avalue = vert0->color[3];
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GLint msavalue = 255 - avalue;
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GLint rvalue = VB->ColorPtr->data[pvert][0]*avalue;
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GLint gvalue = VB->ColorPtr->data[pvert][1]*avalue;
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GLint bvalue = VB->ColorPtr->data[pvert][2]*avalue;
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GLint rvalue = vert0->color[0]*avalue;
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GLint gvalue = vert0->color[1]*avalue;
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GLint bvalue = vert0->color[2]*avalue;
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#define INTERP_XY 1
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#define CLIP_HACK 1
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@ -1315,18 +1336,18 @@ static void flat_blend_rgba_line( GLcontext *ctx,
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* Draw a flat-shaded, Z-less, alpha-blended, RGB line into an osmesa buffer.
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*/
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static void flat_blend_rgba_z_line( GLcontext *ctx,
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GLuint vert0, GLuint vert1, GLuint pvert )
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SWvertex *vert0, SWvertex *vert1 )
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{
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OSMesaContext osmesa = (OSMesaContext) ctx;
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struct vertex_buffer *VB = ctx->VB;
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GLint rshift = osmesa->rshift;
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GLint gshift = osmesa->gshift;
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GLint bshift = osmesa->bshift;
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GLint avalue = VB->ColorPtr->data[pvert][3];
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GLint avalue = vert0->color[3];
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GLint msavalue = 256 - avalue;
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GLint rvalue = VB->ColorPtr->data[pvert][0]*avalue;
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GLint gvalue = VB->ColorPtr->data[pvert][1]*avalue;
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GLint bvalue = VB->ColorPtr->data[pvert][2]*avalue;
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GLint rvalue = vert0->color[0]*avalue;
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GLint gvalue = vert0->color[1]*avalue;
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GLint bvalue = vert0->color[2]*avalue;
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#define INTERP_XY 1
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#define INTERP_Z 1
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@ -1354,18 +1375,18 @@ static void flat_blend_rgba_z_line( GLcontext *ctx,
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* Draw a flat-shaded, Z-less, alpha-blended, RGB line into an osmesa buffer.
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*/
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static void flat_blend_rgba_z_line_write( GLcontext *ctx,
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GLuint vert0, GLuint vert1, GLuint pvert )
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SWvertex *vert0, SWvertex *vert1 )
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{
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OSMesaContext osmesa = (OSMesaContext) ctx;
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struct vertex_buffer *VB = ctx->VB;
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GLint rshift = osmesa->rshift;
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GLint gshift = osmesa->gshift;
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GLint bshift = osmesa->bshift;
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GLint avalue = VB->ColorPtr->data[pvert][3];
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GLint avalue = vert0->color[3];
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GLint msavalue = 256 - avalue;
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GLint rvalue = VB->ColorPtr->data[pvert][0]*avalue;
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GLint gvalue = VB->ColorPtr->data[pvert][1]*avalue;
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GLint bvalue = VB->ColorPtr->data[pvert][2]*avalue;
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GLint rvalue = vert0->color[0]*avalue;
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GLint gvalue = vert0->color[1]*avalue;
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GLint bvalue = vert0->color[2]*avalue;
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#define INTERP_XY 1
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#define INTERP_Z 1
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@ -1394,18 +1415,20 @@ static void flat_blend_rgba_z_line_write( GLcontext *ctx,
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* Analyze context state to see if we can provide a fast line drawing
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* function, like those in lines.c. Otherwise, return NULL.
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*/
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static line_func choose_line_function( GLcontext *ctx )
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static swrast_line_func
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osmesa_choose_line_function( GLcontext *ctx )
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{
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OSMesaContext osmesa = (OSMesaContext) ctx;
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SWcontext *swrast = SWRAST_CONTEXT(ctx);
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if (ctx->Line.SmoothFlag) return NULL;
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if (ctx->Texture.ReallyEnabled) return NULL;
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if (ctx->Texture._ReallyEnabled) return NULL;
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if (ctx->Light.ShadeModel!=GL_FLAT) return NULL;
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if (ctx->Line.Width==1.0F
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&& ctx->Line.StippleFlag==GL_FALSE) {
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if (ctx->RasterMask==DEPTH_BIT
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if (swrast->_RasterMask==DEPTH_BIT
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&& ctx->Depth.Func==GL_LESS
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&& ctx->Depth.Mask==GL_TRUE
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&& ctx->Visual.DepthBits == DEFAULT_SOFTWARE_DEPTH_BITS) {
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@ -1419,7 +1442,7 @@ static line_func choose_line_function( GLcontext *ctx )
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}
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}
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if (ctx->RasterMask==0) {
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if (swrast->_RasterMask==0) {
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switch(osmesa->format) {
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case OSMESA_RGBA:
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case OSMESA_BGRA:
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@ -1430,7 +1453,7 @@ static line_func choose_line_function( GLcontext *ctx )
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}
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}
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if (ctx->RasterMask==(DEPTH_BIT|BLEND_BIT)
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if (swrast->_RasterMask==(DEPTH_BIT|BLEND_BIT)
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&& ctx->Depth.Func==GL_LESS
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&& ctx->Depth.Mask==GL_TRUE
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&& ctx->Visual.DepthBits == DEFAULT_SOFTWARE_DEPTH_BITS
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@ -1449,7 +1472,7 @@ static line_func choose_line_function( GLcontext *ctx )
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}
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}
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if (ctx->RasterMask==(DEPTH_BIT|BLEND_BIT)
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if (swrast->_RasterMask==(DEPTH_BIT|BLEND_BIT)
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&& ctx->Depth.Func==GL_LESS
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&& ctx->Depth.Mask==GL_FALSE
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&& ctx->Visual.DepthBits == DEFAULT_SOFTWARE_DEPTH_BITS
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@ -1468,7 +1491,7 @@ static line_func choose_line_function( GLcontext *ctx )
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}
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}
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if (ctx->RasterMask==BLEND_BIT
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if (swrast->_RasterMask==BLEND_BIT
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&& ctx->Color.BlendSrcRGB==GL_SRC_ALPHA
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&& ctx->Color.BlendDstRGB==GL_ONE_MINUS_SRC_ALPHA
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&& ctx->Color.BlendSrcA==GL_SRC_ALPHA
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@ -1497,15 +1520,14 @@ static line_func choose_line_function( GLcontext *ctx )
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/*
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* Smooth-shaded, z-less triangle, RGBA color.
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*/
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static void smooth_rgba_z_triangle( GLcontext *ctx, GLuint v0, GLuint v1,
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GLuint v2, GLuint pv )
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static void smooth_rgba_z_triangle( GLcontext *ctx,
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SWvertex *v0, SWvertex *v1, SWvertex *v2 )
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{
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OSMesaContext osmesa = (OSMesaContext) ctx;
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GLint rshift = osmesa->rshift;
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GLint gshift = osmesa->gshift;
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GLint bshift = osmesa->bshift;
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GLint ashift = osmesa->ashift;
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(void) pv;
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#define INTERP_Z 1
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#define DEPTH_TYPE DEFAULT_SOFTWARE_DEPTH_TYPE
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@ -1540,17 +1562,17 @@ static void smooth_rgba_z_triangle( GLcontext *ctx, GLuint v0, GLuint v1,
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/*
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* Flat-shaded, z-less triangle, RGBA color.
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*/
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static void flat_rgba_z_triangle( GLcontext *ctx, GLuint v0, GLuint v1,
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GLuint v2, GLuint pv )
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static void flat_rgba_z_triangle( GLcontext *ctx,
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SWvertex *v0, SWvertex *v1, SWvertex *v2 )
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{
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OSMesaContext osmesa = (OSMesaContext) ctx;
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#define INTERP_Z 1
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#define DEPTH_TYPE DEFAULT_SOFTWARE_DEPTH_TYPE
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#define SETUP_CODE \
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GLubyte r = VB->ColorPtr->data[pv][0]; \
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GLubyte g = VB->ColorPtr->data[pv][1]; \
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GLubyte b = VB->ColorPtr->data[pv][2]; \
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GLubyte a = VB->ColorPtr->data[pv][3]; \
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GLubyte r = v0->color[0]; \
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GLubyte g = v0->color[1]; \
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GLubyte b = v0->color[2]; \
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GLubyte a = v0->color[3]; \
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GLuint pixel = PACK_RGBA(r,g,b,a);
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#define INNER_LOOP( LEFT, RIGHT, Y ) \
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@ -1579,17 +1601,20 @@ static void flat_rgba_z_triangle( GLcontext *ctx, GLuint v0, GLuint v1,
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/*
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* Return pointer to an accelerated triangle function if possible.
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*/
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static triangle_func choose_triangle_function( GLcontext *ctx )
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static swrast_tri_func
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osmesa_choose_triangle_function( GLcontext *ctx )
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{
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OSMesaContext osmesa = (OSMesaContext) ctx;
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SWcontext *swrast = SWRAST_CONTEXT(ctx);
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if ((osmesa->format==OSMESA_RGB)||(osmesa->format==OSMESA_BGR)) return NULL;
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if ((osmesa->format==OSMESA_RGB)||(osmesa->format==OSMESA_BGR))
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return (swrast_tri_func)NULL;
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if (ctx->Polygon.SmoothFlag) return NULL;
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if (ctx->Polygon.StippleFlag) return NULL;
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if (ctx->Texture.ReallyEnabled) return NULL;
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if (ctx->Polygon.SmoothFlag) return (swrast_tri_func)NULL;
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if (ctx->Polygon.StippleFlag) return (swrast_tri_func)NULL;
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if (ctx->Texture._ReallyEnabled) return (swrast_tri_func)NULL;
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if (ctx->RasterMask==DEPTH_BIT
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if (swrast->_RasterMask==DEPTH_BIT
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&& ctx->Depth.Func==GL_LESS
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&& ctx->Depth.Mask==GL_TRUE
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&& ctx->Visual.DepthBits == DEFAULT_SOFTWARE_DEPTH_BITS
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@ -1601,9 +1626,51 @@ static triangle_func choose_triangle_function( GLcontext *ctx )
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return flat_rgba_z_triangle;
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}
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}
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return NULL;
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return (swrast_tri_func)NULL;
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}
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/* Override for the swrast triangle-selection function. Try to use one
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* of our internal triangle functions, otherwise fall back to the
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* standard swrast functions.
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*/
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static void osmesa_choose_triangle( GLcontext *ctx )
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{
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SWcontext *swrast = SWRAST_CONTEXT(ctx);
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swrast->Triangle = osmesa_choose_triangle_function( ctx );
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if (!swrast->Triangle)
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_swrast_choose_triangle( ctx );
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}
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static void osmesa_choose_line( GLcontext *ctx )
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{
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SWcontext *swrast = SWRAST_CONTEXT(ctx);
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swrast->Line = osmesa_choose_line_function( ctx );
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if (!swrast->Line)
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_swrast_choose_line( ctx );
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}
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#define OSMESA_NEW_LINE (_NEW_LINE|_NEW_TEXTURE|_NEW_LIGHT|\
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_NEW_DEPTH|_SWRAST_NEW_RASTERMASK)
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#define OSMESA_NEW_TRIANGLE (_NEW_POLYGON|_NEW_TEXTURE|_NEW_LIGHT|\
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_SWRAST_NEW_RASTERMASK|_NEW_DEPTH)
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/* Extend the software rasterizer with our line and triangle
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* functions.
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*/
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static void osmesa_register_swrast_functions( GLcontext *ctx )
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{
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SWcontext *swrast = SWRAST_CONTEXT( ctx );
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swrast->choose_line = osmesa_choose_line;
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swrast->choose_triangle = osmesa_choose_triangle;
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swrast->invalidate_line |= OSMESA_NEW_LINE;
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swrast->invalidate_triangle |= OSMESA_NEW_TRIANGLE;
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}
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static const GLubyte *get_string( GLcontext *ctx, GLenum name )
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@ -1625,6 +1692,7 @@ static void osmesa_update_state( GLcontext *ctx )
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ASSERT((void *) osmesa == (void *) ctx->DriverCtx);
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ctx->Driver.GetString = get_string;
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ctx->Driver.UpdateStateNotify = ~0;
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ctx->Driver.UpdateState = osmesa_update_state;
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ctx->Driver.SetDrawBuffer = set_draw_buffer;
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@ -1637,9 +1705,11 @@ static void osmesa_update_state( GLcontext *ctx )
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ctx->Driver.GetBufferSize = buffer_size;
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ctx->Driver.PointsFunc = NULL;
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ctx->Driver.LineFunc = choose_line_function( ctx );
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ctx->Driver.TriangleFunc = choose_triangle_function( ctx );
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ctx->Driver.PointsFunc = _swsetup_Points;
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ctx->Driver.LineFunc = _swsetup_Line;
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ctx->Driver.TriangleFunc = _swsetup_Triangle;
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ctx->Driver.QuadFunc = _swsetup_Quad;
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ctx->Driver.RasterSetup = _swsetup_RasterSetup;
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/* RGB(A) span/pixel functions */
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