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Initial work on GL_MESA_sprite_point extension.

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Still need to resolve clipping issues, finalize the spec.
This commit is contained in:
Brian Paul
2000-12-08 00:20:15 +00:00
parent fb7899bfec
commit 06d05afdd6
8 changed files with 291 additions and 41 deletions
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3
src/mesa/main/context.c
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@@ -1,4 +1,4 @@
/* $Id: context.c,v 1.110 2000/11/27 18:22:13 brianp Exp $ */
/* $Id: context.c,v 1.111 2000/12/08 00:20:15 brianp Exp $ */
/*
* Mesa 3-D graphics library
@@ -1094,6 +1094,7 @@ init_attrib_groups( GLcontext *ctx )
ctx->Point.MinSize = 0.0;
ctx->Point.MaxSize = ctx->Const.MaxPointSize;
ctx->Point.Threshold = 1.0;
ctx->Point.SpriteMode = GL_FALSE; /* GL_MESA_sprite_point */
/* Polygon group */
ctx->Polygon.CullFlag = GL_FALSE;

120
src/mesa/main/enable.c
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@@ -1,4 +1,4 @@
/* $Id: enable.c,v 1.35 2000/11/27 18:59:09 brianp Exp $ */
/* $Id: enable.c,v 1.36 2000/12/08 00:20:15 brianp Exp $ */
/*
* Mesa 3-D graphics library
@@ -503,46 +503,90 @@ void _mesa_set_enable( GLcontext *ctx, GLenum cap, GLboolean state )
/* GL_SGIS_pixel_texture */
case GL_PIXEL_TEXTURE_SGIS:
/* XXX check for extension */
ctx->Pixel.PixelTextureEnabled = state;
ctx->NewState |= _NEW_PIXEL;
if (ctx->Extensions.SGIS_pixel_texture) {
ctx->Pixel.PixelTextureEnabled = state;
ctx->NewState |= _NEW_PIXEL;
}
else {
gl_error( ctx, GL_INVALID_ENUM, state ? "glEnable": "glDisable" );
return;
}
break;
/* GL_SGIX_pixel_texture */
case GL_PIXEL_TEX_GEN_SGIX:
/* XXX check for extension */
ctx->Pixel.PixelTextureEnabled = state;
ctx->NewState |= _NEW_PIXEL;
if (ctx->Extensions.SGIX_pixel_texture) {
ctx->Pixel.PixelTextureEnabled = state;
ctx->NewState |= _NEW_PIXEL;
}
else {
gl_error( ctx, GL_INVALID_ENUM, state ? "glEnable": "glDisable" );
return;
}
break;
/* GL_SGI_color_table */
case GL_COLOR_TABLE_SGI:
/* XXX check for extension */
ctx->Pixel.ColorTableEnabled = state;
ctx->NewState |= _NEW_PIXEL;
if (ctx->Extensions.SGI_color_table) {
ctx->Pixel.ColorTableEnabled = state;
ctx->NewState |= _NEW_PIXEL;
}
else {
gl_error( ctx, GL_INVALID_ENUM, state ? "glEnable": "glDisable" );
return;
}
break;
case GL_POST_CONVOLUTION_COLOR_TABLE_SGI:
ctx->Pixel.PostConvolutionColorTableEnabled = state;
ctx->NewState |= _NEW_PIXEL;
if (ctx->Extensions.SGI_color_table) {
ctx->Pixel.PostConvolutionColorTableEnabled = state;
ctx->NewState |= _NEW_PIXEL;
}
else {
gl_error( ctx, GL_INVALID_ENUM, state ? "glEnable": "glDisable" );
return;
}
break;
case GL_POST_COLOR_MATRIX_COLOR_TABLE_SGI:
ctx->Pixel.PostColorMatrixColorTableEnabled = state;
ctx->NewState |= _NEW_PIXEL;
if (ctx->Extensions.SGI_color_table) {
ctx->Pixel.PostColorMatrixColorTableEnabled = state;
ctx->NewState |= _NEW_PIXEL;
}
else {
gl_error( ctx, GL_INVALID_ENUM, state ? "glEnable": "glDisable" );
return;
}
break;
/* GL_EXT_convolution */
case GL_CONVOLUTION_1D:
/* XXX check for extension */
ctx->Pixel.Convolution1DEnabled = state;
ctx->NewState |= _NEW_PIXEL;
if (ctx->Extensions.EXT_convolution) {
ctx->Pixel.Convolution1DEnabled = state;
ctx->NewState |= _NEW_PIXEL;
}
else {
gl_error(ctx, GL_INVALID_ENUM, state ? "glEnable" : "glDisable");
return;
}
break;
case GL_CONVOLUTION_2D:
ctx->Pixel.Convolution2DEnabled = state;
ctx->NewState |= _NEW_PIXEL;
if (ctx->Extensions.EXT_convolution) {
ctx->Pixel.Convolution2DEnabled = state;
ctx->NewState |= _NEW_PIXEL;
}
else {
gl_error(ctx, GL_INVALID_ENUM, state ? "glEnable" : "glDisable");
return;
}
break;
case GL_SEPARABLE_2D:
ctx->Pixel.Separable2DEnabled = state;
ctx->NewState |= _NEW_PIXEL;
if (ctx->Extensions.EXT_convolution) {
ctx->Pixel.Separable2DEnabled = state;
ctx->NewState |= _NEW_PIXEL;
}
else {
gl_error(ctx, GL_INVALID_ENUM, state ? "glEnable" : "glDisable");
return;
}
break;
/* GL_ARB_texture_cube_map */
@@ -568,12 +612,30 @@ void _mesa_set_enable( GLcontext *ctx, GLenum cap, GLboolean state )
/* GL_EXT_secondary_color */
case GL_COLOR_SUM_EXT:
ctx->Fog.ColorSumEnabled = state;
if (state)
SET_BITS(ctx->_TriangleCaps, DD_SEPERATE_SPECULAR);
else if (ctx->Light.Model.ColorControl == GL_SINGLE_COLOR)
CLEAR_BITS(ctx->_TriangleCaps, DD_SEPERATE_SPECULAR);
ctx->NewState |= _NEW_FOG;
if (ctx->Extensions.EXT_secondary_color) {
ctx->Fog.ColorSumEnabled = state;
if (state)
SET_BITS(ctx->_TriangleCaps, DD_SEPERATE_SPECULAR);
else if (ctx->Light.Model.ColorControl == GL_SINGLE_COLOR)
CLEAR_BITS(ctx->_TriangleCaps, DD_SEPERATE_SPECULAR);
ctx->NewState |= _NEW_FOG;
}
else {
gl_error(ctx, GL_INVALID_ENUM, state ? "glEnable" : "glDisable");
return;
}
break;
/* GL_MESA_sprite_point */
case GL_SPRITE_POINT_MESA:
if (ctx->Extensions.MESA_sprite_point) {
ctx->Point.SpriteMode = state;
ctx->NewState |= _NEW_POINT;
}
else {
gl_error(ctx, GL_INVALID_ENUM, state ? "glEnable" : "glDisable");
return;
}
break;
default:
@@ -820,6 +882,10 @@ _mesa_IsEnabled( GLenum cap )
return GL_FALSE;
}
/* GL_MESA_sprite_point */
case GL_SPRITE_POINT_MESA:
return ctx->Point.SpriteMode;
default:
gl_error( ctx, GL_INVALID_ENUM, "glIsEnabled" );
return GL_FALSE;

4
src/mesa/main/extensions.c
View File

@@ -1,4 +1,4 @@
/* $Id: extensions.c,v 1.42 2000/11/22 07:32:16 joukj Exp $ */
/* $Id: extensions.c,v 1.43 2000/12/08 00:20:15 brianp Exp $ */
/*
* Mesa 3-D graphics library
@@ -95,6 +95,7 @@ static struct {
{ ON, "GL_INGR_blend_func_separate", F(INGR_blend_func_separate) },
{ ON, "GL_MESA_window_pos", F(MESA_window_pos) },
{ ON, "GL_MESA_resize_buffers", F(MESA_resize_buffers) },
{ OFF, "GL_MESA_sprite_point", F(MESA_sprite_point) },
{ OFF, "GL_NV_blend_square", F(NV_blend_square) },
{ ON, "GL_NV_texgen_reflection", F(NV_texgen_reflection) },
{ ON, "GL_PGI_misc_hints", F(PGI_misc_hints) },
@@ -121,6 +122,7 @@ _mesa_enable_sw_extensions(GLcontext *ctx)
gl_extensions_enable(ctx, "GL_EXT_texture_env_combine");
gl_extensions_enable(ctx, "GL_HP_occlusion_test");
gl_extensions_enable(ctx, "GL_NV_blend_square");
gl_extensions_enable(ctx, "GL_MESA_sprite_point");
}

74
src/mesa/main/get.c
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@@ -1,4 +1,4 @@
/* $Id: get.c,v 1.44 2000/11/27 18:22:13 brianp Exp $ */
/* $Id: get.c,v 1.45 2000/12/08 00:20:15 brianp Exp $ */
/*
* Mesa 3-D graphics library
@@ -1274,6 +1274,17 @@ _mesa_GetBooleanv( GLenum pname, GLboolean *params )
*params = INT_TO_BOOL(ctx->Array.FogCoord.Stride);
break;
/* GL_MESA_sprite_point */
case GL_SPRITE_POINT_MESA:
if (ctx->Extensions.MESA_sprite_point) {
*params = ctx->Point.SpriteMode;
}
else {
gl_error( ctx, GL_INVALID_ENUM, "glGetBooleanv" );
return;
}
break;
default:
gl_error( ctx, GL_INVALID_ENUM, "glGetBooleanv" );
}
@@ -2472,6 +2483,16 @@ _mesa_GetDoublev( GLenum pname, GLdouble *params )
*params = (GLdouble) ctx->Array.FogCoord.Stride;
break;
/* GL_MESA_sprite_point */
case GL_SPRITE_POINT_MESA:
if (ctx->Extensions.MESA_sprite_point) {
*params = (GLdouble) ctx->Point.SpriteMode;
}
else {
gl_error( ctx, GL_INVALID_ENUM, "glGetDoublev" );
return;
}
break;
default:
gl_error( ctx, GL_INVALID_ENUM, "glGetDoublev" );
@@ -3645,6 +3666,16 @@ _mesa_GetFloatv( GLenum pname, GLfloat *params )
*params = (GLfloat) ctx->Array.FogCoord.Stride;
break;
/* GL_MESA_sprite_point */
case GL_SPRITE_POINT_MESA:
if (ctx->Extensions.MESA_sprite_point) {
*params = (GLfloat) ctx->Point.SpriteMode;
}
else {
gl_error( ctx, GL_INVALID_ENUM, "glGetFloatv" );
return;
}
break;
default:
gl_error( ctx, GL_INVALID_ENUM, "glGetFloatv" );
@@ -4834,19 +4865,50 @@ _mesa_GetIntegerv( GLenum pname, GLint *params )
/* GL_EXT_fog_coord */
case GL_CURRENT_FOG_COORDINATE_EXT:
FLUSH_TNL( ctx, FLUSH_UPDATE_CURRENT );
*params = (GLint) ctx->Current.FogCoord;
if (ctx->Extensions.EXT_fog_coord) {
FLUSH_TNL( ctx, FLUSH_UPDATE_CURRENT );
*params = (GLint) ctx->Current.FogCoord;
}
else {
gl_error( ctx, GL_INVALID_ENUM, "glGetIntegerv" );
}
break;
case GL_FOG_COORDINATE_ARRAY_EXT:
*params = (GLint) ctx->Array.FogCoord.Enabled;
if (ctx->Extensions.EXT_fog_coord) {
*params = (GLint) ctx->Array.FogCoord.Enabled;
}
else {
gl_error( ctx, GL_INVALID_ENUM, "glGetIntegerv" );
}
break;
case GL_FOG_COORDINATE_ARRAY_TYPE_EXT:
*params = (GLint) ctx->Array.FogCoord.Type;
if (ctx->Extensions.EXT_fog_coord) {
*params = (GLint) ctx->Array.FogCoord.Type;
}
else {
gl_error( ctx, GL_INVALID_ENUM, "glGetIntegerv" );
}
break;
case GL_FOG_COORDINATE_ARRAY_STRIDE_EXT:
*params = (GLint) ctx->Array.FogCoord.Stride;
if (ctx->Extensions.EXT_fog_coord) {
*params = (GLint) ctx->Array.FogCoord.Stride;
}
else {
gl_error( ctx, GL_INVALID_ENUM, "glGetIntegerv" );
}
break;
/* GL_MESA_sprite_point */
case GL_SPRITE_POINT_MESA:
if (ctx->Extensions.MESA_sprite_point) {
*params = (GLint) ctx->Point.SpriteMode;
}
else {
gl_error( ctx, GL_INVALID_ENUM, "glGetIntegerv" );
return;
}
break;
default:
gl_error( ctx, GL_INVALID_ENUM, "glGetIntegerv" );
}

6
src/mesa/main/mtypes.h
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@@ -1,4 +1,4 @@
/* $Id: mtypes.h,v 1.4 2000/11/28 00:07:51 brianp Exp $ */
/* $Id: mtypes.h,v 1.5 2000/12/08 00:20:15 brianp Exp $ */
/*
* Mesa 3-D graphics library
@@ -602,6 +602,7 @@ struct gl_pixel_attrib {
struct gl_point_attrib {
GLboolean SmoothFlag; /* True if GL_POINT_SMOOTH is enabled */
GLboolean SpriteMode; /* GL_MESA_sprite_point extension */
GLfloat Size; /* User-specified point size */
GLfloat _Size; /* Size clamped to Const.Min/MaxPointSize */
GLfloat Params[3]; /* GL_EXT_point_parameters */
@@ -816,7 +817,7 @@ struct gl_texture_object {
*/
struct gl_texture_unit {
GLuint Enabled; /* bitmask of TEXTURE0_1D, _2D, _3D, _CUBE */
GLuint _ReallyEnabled; /* 0 or one of TEXTURE0_1D, _2D, _3D, _CUBE */
GLuint _ReallyEnabled; /* 0 or one of TEXTURE0_1D, _2D, _3D, _CUBE */
GLenum EnvMode; /* GL_MODULATE, GL_DECAL, GL_BLEND, etc. */
GLfloat EnvColor[4];
@@ -1214,6 +1215,7 @@ struct gl_extensions {
GLboolean INGR_blend_func_separate;
GLboolean MESA_window_pos;
GLboolean MESA_resize_buffers;
GLboolean MESA_sprite_point;
GLboolean NV_blend_square;
GLboolean NV_texgen_reflection;
GLboolean PGI_misc_hints;

3
src/mesa/main/points.c
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@@ -1,4 +1,4 @@
/* $Id: points.c,v 1.24 2000/11/22 07:32:17 joukj Exp $ */
/* $Id: points.c,v 1.25 2000/12/08 00:20:15 brianp Exp $ */
/*
* Mesa 3-D graphics library
@@ -88,6 +88,7 @@ _mesa_PointParameterfvEXT( GLenum pname, const GLfloat *params)
if (tmp != ctx->Point._Attenuated) {
ctx->_Enabled ^= ENABLE_POINT_ATTEN;
ctx->_TriangleCaps ^= DD_POINT_ATTEN;
/* XXX why is this here and not in state.c? */
ctx->_NeedEyeCoords ^= NEED_EYE_POINT_ATTEN;
}
}

9
src/mesa/main/state.c
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@@ -1,4 +1,4 @@
/* $Id: state.c,v 1.50 2000/11/28 00:07:51 brianp Exp $ */
/* $Id: state.c,v 1.51 2000/12/08 00:20:15 brianp Exp $ */
/*
* Mesa 3-D graphics library
@@ -781,6 +781,13 @@ void gl_update_state( GLcontext *ctx )
ctx->_NeedEyeCoords |= NEED_EYE_LIGHT_MODELVIEW;
}
/* point attenuation requires eye coords */
if (new_state & _NEW_POINT) {
if (ctx->Point._Attenuated) {
ctx->_NeedEyeCoords |= NEED_EYE_POINT_ATTEN;
}
}
/* ctx->_NeedEyeCoords and ctx->_NeedEyeNormals are now uptodate.
*
* If the truth value of either has changed, update for the new

113
src/mesa/swrast/s_points.c
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@@ -1,4 +1,4 @@
/* $Id: s_points.c,v 1.8 2000/12/08 00:18:39 brianp Exp $ */
/* $Id: s_points.c,v 1.9 2000/12/08 00:20:15 brianp Exp $ */
/*
* Mesa 3-D graphics library
@@ -838,6 +838,60 @@ dist_atten_antialiased_rgba_point( GLcontext *ctx, const SWvertex *vert )
}
/*
* Sprite (textured point)
*/
static void
sprite_point( GLcontext *ctx, const SWvertex *vert )
{
SWcontext *swctx = SWRAST_CONTEXT(ctx);
const GLfloat radius = vert->pointSize; /* XXX threshold, alpha */
SWvertex v0, v1, v2, v3;
GLuint unit;
/* lower left corner */
v0 = *vert;
v0.win[0] -= radius;
v0.win[1] -= radius;
/* lower right corner */
v1 = *vert;
v1.win[0] += radius;
v1.win[1] -= radius;
/* upper right corner */
v2 = *vert;
v2.win[0] += radius;
v2.win[1] += radius;
/* upper left corner */
v3 = *vert;
v3.win[0] -= radius;
v3.win[1] += radius;
for (unit = 0; unit < ctx->Const.MaxTextureUnits; unit++) {
if (ctx->Texture.Unit[unit]._ReallyEnabled) {
v0.texcoord[unit][0] = 0.0;
v0.texcoord[unit][1] = 0.0;
v1.texcoord[unit][0] = 1.0;
v1.texcoord[unit][1] = 0.0;
v2.texcoord[unit][0] = 1.0;
v2.texcoord[unit][1] = 1.0;
v3.texcoord[unit][0] = 0.0;
v3.texcoord[unit][1] = 1.0;
}
}
/* XXX if radius < threshold, attenuate alpha? */
/* XXX what about clipping? */
/* render */
swctx->Triangle(ctx, &v0, &v1, &v2);
swctx->Triangle(ctx, &v0, &v2, &v3);
}
#ifdef DEBUG
extern void
@@ -889,7 +943,11 @@ _swrast_choose_point( GLcontext *ctx )
GLboolean rgbmode = ctx->Visual.RGBAflag;
if (ctx->RenderMode==GL_RENDER) {
if (!ctx->Point._Attenuated) {
if (ctx->Point.SpriteMode) {
/* XXX this is hacked in! */
swrast->Point = sprite_point;
}
else if (!ctx->Point._Attenuated) {
if (ctx->Point.SmoothFlag && rgbmode) {
swrast->Point = antialiased_rgba_point;
}
@@ -943,3 +1001,54 @@ _swrast_choose_point( GLcontext *ctx )
/*_mesa_print_points_function(ctx);*/
}
#if 000 /* prototype of new point code */
#define RGBA 0x1
#define SMOOTH 0x2
#define LARGE 0x4
#define TEXTURE 0x8
#define ATTENUATE 0x10
#define SPRITE 0x20
#define FLAGS (RGBA | SMOOTH | LARGE)
#define NAME rgba_smooth_large
#include "s_pointtemp.h"
#define FLAGS (RGBA | TEXTURE | ATTENUATE)
#define NAME rgba_texture_smooth_attenuate
#include "s_pointtemp.h"
#define FLAGS (INDEX | LARGE | ATTENUATE)
#define NAME index_large_attenuate
#include "s_pointtemp.h"
static void* point_tab[0x20];
void
_swrast_choose_point( GLcontext *ctx )
{
GLuint index = 0;
if (ctx->RenderMode==GL_RENDER) {
if (ctx->Visual.RGBAflag)
index |= RGBA;
if (ctx->Point.SmoothFlag)
index |= SMOOTH;
if (ctx->Point._Attenuated || ctx->Point.Size > 1.0)
index |= SIZED;
if (ctx->Texture.ReallyEnabled)
index |= TEXTURE;
swrast->Point = point_tab[index];
}
else if (ctx->RenderMode==GL_FEEDBACK) {
swrast->Point = gl_feedback_point;
}
else {
/* GL_SELECT mode */
swrast->Point = gl_select_point;
}
}
#endif