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GL1 unified draw calls, episode vi

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Buffered shadows.
This commit is contained in:
Jaime Moreira 2024-07-15 12:33:19 -04:00
parent 55dfaa2e3b
commit 24b546ba54
3 changed files with 10 additions and 43 deletions
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1
src/client/refresh/gl1/gl1_buffer.c
View file

@ -91,6 +91,7 @@ R_ApplyGLBuffer(void)
break; break;
case buf_flash: case buf_flash:
color = true; color = true;
case buf_shadow:
texture = false; texture = false;
break; break;
default: default:

49
src/client/refresh/gl1/gl1_mesh.c
View file

@ -207,8 +207,6 @@ R_DrawAliasFrameLerp(entity_t *currententity, dmdl_t *paliashdr, float backlerp)
static void static void
R_DrawAliasShadow(entity_t *currententity, dmdl_t *paliashdr, int posenum) R_DrawAliasShadow(entity_t *currententity, dmdl_t *paliashdr, int posenum)
{ {
unsigned short total;
GLenum type;
int *order; int *order;
vec3_t point; vec3_t point;
float height = 0, lheight; float height = 0, lheight;
@ -218,6 +216,8 @@ R_DrawAliasShadow(entity_t *currententity, dmdl_t *paliashdr, int posenum)
order = (int *)((byte *)paliashdr + paliashdr->ofs_glcmds); order = (int *)((byte *)paliashdr + paliashdr->ofs_glcmds);
height = -lheight + 0.1f; height = -lheight + 0.1f;
R_UpdateGLBuffer(buf_shadow, 0, 0, 0, 1);
/* stencilbuffer shadows */ /* stencilbuffer shadows */
if (gl_state.stencil && gl1_stencilshadow->value) if (gl_state.stencil && gl1_stencilshadow->value)
{ {
@ -226,25 +226,6 @@ R_DrawAliasShadow(entity_t *currententity, dmdl_t *paliashdr, int posenum)
glStencilOp(GL_KEEP, GL_KEEP, GL_INCR); glStencilOp(GL_KEEP, GL_KEEP, GL_INCR);
} }
#ifdef _MSC_VER // workaround for lack of VLAs (=> our workaround uses alloca() which is bad in loops)
int maxCount = 0;
const int* tmpOrder = order;
while (1)
{
int c = *tmpOrder++;
if (!c)
break;
if (c < 0)
c = -c;
if (c > maxCount)
maxCount = c;
tmpOrder += 3 * c;
}
YQ2_VLA(GLfloat, vtx, 3 * maxCount);
#endif
while (1) while (1)
{ {
/* get the vertex count and primitive type */ /* get the vertex count and primitive type */
@ -258,21 +239,13 @@ R_DrawAliasShadow(entity_t *currententity, dmdl_t *paliashdr, int posenum)
if (count < 0) if (count < 0)
{ {
count = -count; count = -count;
R_SetBufferIndices(GL_TRIANGLE_FAN, count);
type = GL_TRIANGLE_FAN;
} }
else else
{ {
type = GL_TRIANGLE_STRIP; R_SetBufferIndices(GL_TRIANGLE_STRIP, count);
} }
total = count;
#ifndef _MSC_VER // we have real VLAs, so it's safe to use one in this loop
YQ2_VLA(GLfloat, vtx, 3*total);
#endif
unsigned int index_vtx = 0;
do do
{ {
/* normals and vertexes come from the frame list */ /* normals and vertexes come from the frame list */
@ -282,22 +255,14 @@ R_DrawAliasShadow(entity_t *currententity, dmdl_t *paliashdr, int posenum)
point[1] -= shadevector[1] * (point[2] + lheight); point[1] -= shadevector[1] * (point[2] + lheight);
point[2] = height; point[2] = height;
vtx[index_vtx++] = point [ 0 ]; R_BufferVertex( point[0], point[1], point[2] );
vtx[index_vtx++] = point [ 1 ];
vtx[index_vtx++] = point [ 2 ];
order += 3; order += 3;
} }
while (--count); while (--count);
glEnableClientState( GL_VERTEX_ARRAY );
glVertexPointer( 3, GL_FLOAT, 0, vtx );
glDrawArrays( type, 0, total );
glDisableClientState( GL_VERTEX_ARRAY );
} }
YQ2_VLAFREE(vtx);
R_ApplyGLBuffer();
/* stencilbuffer shadows */ /* stencilbuffer shadows */
if (gl_state.stencil && gl1_stencilshadow->value) if (gl_state.stencil && gl1_stencilshadow->value)

3
src/client/refresh/gl1/header/local.h
View file

@ -114,7 +114,8 @@ typedef enum
buf_mtex, buf_mtex,
buf_alpha, buf_alpha,
buf_alias, buf_alias,
buf_flash buf_flash,
buf_shadow
} buffered_draw_t; } buffered_draw_t;
#include "model.h" #include "model.h"