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https://github.com/yquake2/yquake2remaster.git
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GL1 unified draw calls, part 3
Batching / buffered procedure, applied to multitexture surfaces. This solves the issue with gl1_overbrightbits, when jumping between 0 and 2-4.
This commit is contained in:
Jaime Moreira
parent
4461128255
commit
749e70b988
3 changed files with 55 additions and 67 deletions
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@ -61,7 +61,7 @@ R_ApplyGLBuffer(void)
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{
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// Properties of batched draws here
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GLint vtx_size;
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qboolean texture, alpha, texenv_set;
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qboolean texture, mtex, alpha, texenv_set;
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if (gl_buf.vtx_ptr == 0 || gl_buf.idx_ptr == 0)
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{
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@ -71,7 +71,7 @@ R_ApplyGLBuffer(void)
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// defaults for drawing (mostly buf_singletex features)
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vtx_size = 3;
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texture = true;
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alpha = texenv_set = false;
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mtex = alpha = texenv_set = false;
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// choosing features by type
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switch (gl_buf.type)
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@ -79,6 +79,9 @@ R_ApplyGLBuffer(void)
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case buf_2d:
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vtx_size = 2;
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break;
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case buf_mtex:
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mtex = true;
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break;
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case buf_alpha:
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alpha = true;
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break;
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@ -86,6 +89,8 @@ R_ApplyGLBuffer(void)
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break;
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}
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R_EnableMultitexture(mtex);
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if (alpha)
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{
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// the textures are prescaled up for a better
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@ -130,7 +135,27 @@ R_ApplyGLBuffer(void)
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if (texture)
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{
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R_Bind(gl_buf.texture[0]);
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if (mtex)
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{
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// TMU 1: Lightmap texture
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R_MBind(GL_TEXTURE1, gl_state.lightmap_textures + gl_buf.texture[1]);
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if (gl1_overbrightbits->value)
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{
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R_TexEnv(GL_COMBINE);
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glTexEnvi(GL_TEXTURE_ENV, GL_RGB_SCALE, gl1_overbrightbits->value);
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}
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glEnableClientState(GL_TEXTURE_COORD_ARRAY);
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glTexCoordPointer(2, GL_FLOAT, 0, gl_buf.tex[1]);
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// TMU 0: Color texture
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R_MBind(GL_TEXTURE0, gl_buf.texture[0]);
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}
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else
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{
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R_Bind(gl_buf.texture[0]);
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}
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glEnableClientState(GL_TEXTURE_COORD_ARRAY);
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glTexCoordPointer(2, GL_FLOAT, 0, gl_buf.tex[0]);
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@ -159,6 +184,7 @@ void
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R_UpdateGLBuffer(buffered_draw_t type, int colortex, int lighttex, int flags, float alpha)
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{
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if ( gl_buf.type != type || gl_buf.texture[0] != colortex ||
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(gl_config.multitexture && type == buf_mtex && gl_buf.texture[1] != lighttex) ||
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(type == buf_singletex && gl_buf.flags != flags) ||
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(type == buf_alpha && gl_buf.alpha != alpha))
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{
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@ -279,3 +305,16 @@ R_BufferSingleTex(GLfloat s, GLfloat t)
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gl_buf.tex[0][tx++] = s;
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gl_buf.tex[0][tx++] = t;
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}
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/*
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* Adds texture coordinates for color and lightmap
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*/
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void
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R_BufferMultiTex(GLfloat cs, GLfloat ct, GLfloat ls, GLfloat lt)
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{
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gl_buf.tex[0][tx] = cs;
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gl_buf.tex[0][tx+1] = ct;
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gl_buf.tex[1][tx] = ls;
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gl_buf.tex[1][tx+1] = lt;
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tx += 2;
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}
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@ -573,15 +573,6 @@ R_RenderLightmappedPoly(entity_t *currententity, msurface_t *surf)
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float scroll;
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float *v;
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R_MBind(GL_TEXTURE1, gl_state.lightmap_textures + surf->lightmaptexturenum);
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// Apply overbrightbits to TMU 1 (lightmap)
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if (gl1_overbrightbits->value)
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{
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R_TexEnv(GL_COMBINE);
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glTexEnvi(GL_TEXTURE_ENV, GL_RGB_SCALE, gl1_overbrightbits->value);
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}
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c_brush_polys++;
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v = surf->polys->verts[0];
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@ -593,60 +584,19 @@ R_RenderLightmappedPoly(entity_t *currententity, msurface_t *surf)
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{
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scroll = -64.0;
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}
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YQ2_VLA(GLfloat, tex, 4 * nv);
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unsigned int index_tex = 0;
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for (i = 0; i < nv; i++, v += VERTEXSIZE)
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{
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tex[index_tex++] = v[3] + scroll;
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tex[index_tex++] = v[4];
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tex[index_tex++] = v[5];
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tex[index_tex++] = v[6];
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}
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v = surf->polys->verts[0];
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// Polygon
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glEnableClientState(GL_VERTEX_ARRAY);
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glVertexPointer(3, GL_FLOAT, VERTEXSIZE * sizeof(GLfloat), v);
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// Texture
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glEnableClientState(GL_TEXTURE_COORD_ARRAY);
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qglClientActiveTexture(GL_TEXTURE0);
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glTexCoordPointer(2, GL_FLOAT, 4 * sizeof(GLfloat), tex);
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// Lightmap
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glEnableClientState(GL_TEXTURE_COORD_ARRAY);
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qglClientActiveTexture(GL_TEXTURE1);
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glTexCoordPointer(2, GL_FLOAT, 4 * sizeof(GLfloat), tex + 2);
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// Draw the thing
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glDrawArrays(GL_TRIANGLE_FAN, 0, nv);
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YQ2_VLAFREE(tex);
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}
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else
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{
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// Polygon
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glEnableClientState(GL_VERTEX_ARRAY);
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glVertexPointer(3, GL_FLOAT, VERTEXSIZE * sizeof(GLfloat), v);
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// Texture
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glEnableClientState(GL_TEXTURE_COORD_ARRAY);
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qglClientActiveTexture(GL_TEXTURE0);
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glTexCoordPointer(2, GL_FLOAT, VERTEXSIZE * sizeof(GLfloat), v + 3);
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// Lightmap
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glEnableClientState(GL_TEXTURE_COORD_ARRAY);
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qglClientActiveTexture(GL_TEXTURE1);
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glTexCoordPointer(2, GL_FLOAT, VERTEXSIZE * sizeof(GLfloat), v + 5);
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// Draw it
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glDrawArrays(GL_TRIANGLE_FAN, 0, nv);
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scroll = 0.0;
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}
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glDisableClientState(GL_VERTEX_ARRAY);
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glDisableClientState(GL_TEXTURE_COORD_ARRAY);
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R_SetBufferIndices(GL_TRIANGLE_FAN, nv);
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for (i = 0; i < nv; i++, v += VERTEXSIZE)
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{
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R_BufferVertex( v[0], v[1], v[2] );
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R_BufferMultiTex( v[3] + scroll, v[4], v[5], v[6] );
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}
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}
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/* Upload dynamic lights to each lightmap texture (multitexture path only) */
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@ -782,8 +732,6 @@ R_DrawTextureChains(entity_t *currententity)
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}
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else // multitexture
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{
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R_EnableMultitexture(true);
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for (i = 0, image = gltextures; i < numgltextures; i++, image++)
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{
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if (!image->registration_sequence || !image->texturechain)
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@ -791,17 +739,18 @@ R_DrawTextureChains(entity_t *currententity)
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continue;
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}
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R_MBind(GL_TEXTURE0, image->texnum); // setting it only once
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c_visible_textures++;
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for (s = image->texturechain; s; s = s->texturechain)
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{
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if (!(s->flags & SURF_DRAWTURB))
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{
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R_UpdateGLBuffer(buf_mtex, image->texnum, s->lightmaptexturenum, 0, 1);
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R_RenderLightmappedPoly(currententity, s);
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}
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}
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}
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R_ApplyGLBuffer();
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R_EnableMultitexture(false); // force disabling, SURF_DRAWTURB surfaces may not exist
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@ -884,8 +833,7 @@ R_DrawInlineBModel(entity_t *currententity, const model_t *currentmodel)
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if (gl_config.multitexture && !(psurf->flags & SURF_DRAWTURB))
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{
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// Dynamic lighting already generated in R_GetBrushesLighting()
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R_EnableMultitexture(true);
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R_MBind(GL_TEXTURE0, image->texnum);
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R_UpdateGLBuffer(buf_mtex, image->texnum, psurf->lightmaptexturenum, 0, 1);
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R_RenderLightmappedPoly(currententity, psurf);
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}
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else
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@ -896,7 +844,6 @@ R_DrawInlineBModel(entity_t *currententity, const model_t *currentmodel)
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}
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}
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}
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R_EnableMultitexture(false);
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R_ApplyGLBuffer();
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if (!(currententity->flags & RF_TRANSLUCENT))
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@ -111,6 +111,7 @@ typedef enum
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{
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buf_2d,
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buf_singletex,
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buf_mtex,
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buf_alpha
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} buffered_draw_t;
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@ -295,6 +296,7 @@ void R_Buffer2DQuad(GLfloat ul_vx, GLfloat ul_vy, GLfloat dr_vx, GLfloat dr_vy,
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void R_SetBufferIndices(GLenum type, GLuint vertices_num);
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void R_BufferVertex(GLfloat x, GLfloat y, GLfloat z);
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void R_BufferSingleTex(GLfloat s, GLfloat t);
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void R_BufferMultiTex(GLfloat cs, GLfloat ct, GLfloat ls, GLfloat lt);
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#ifdef DEBUG
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void glCheckError_(const char *file, const char *function, int line);
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