mirror of
https://github.com/yquake2/yquake2remaster.git
synced 2024-11-25 22:10:59 +00:00
commit
a659da38c1
3 changed files with 84 additions and 44 deletions
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@ -123,8 +123,8 @@ cvar_t *gl_zfix;
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cvar_t *gl_fullbright;
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cvar_t *gl_modulate;
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cvar_t *gl_lightmap;
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cvar_t *gl_shadows; // TODO: do we really need 2 cvars for shadows here?
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cvar_t *gl_stencilshadow;
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cvar_t *gl_shadows;
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// no gl_stencilshadows, always use stencil (if available)
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cvar_t *gl_dynamic;
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@ -234,7 +234,6 @@ GL3_Register(void)
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gl_lightmap = ri.Cvar_Get("gl_lightmap", "0", 0);
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gl_shadows = ri.Cvar_Get("gl_shadows", "0", CVAR_ARCHIVE);
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gl_stencilshadow = ri.Cvar_Get("gl_stencilshadow", "0", CVAR_ARCHIVE);
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gl_modulate = ri.Cvar_Get("gl_modulate", "1", CVAR_ARCHIVE);
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gl_zfix = ri.Cvar_Get("gl_zfix", "0", 0);
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@ -1589,7 +1588,7 @@ GL3_Clear(void)
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}
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/* stencilbuffer shadows */
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if (gl_shadows->value && have_stencil && gl_stencilshadow->value)
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if (gl_shadows->value && have_stencil)
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{
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glClearStencil(1);
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glClear(GL_STENCIL_BUFFER_BIT);
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@ -309,12 +309,10 @@ DrawAliasFrameLerp(dmdl_t *paliashdr, float backlerp)
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glBufferData(GL_ELEMENT_ARRAY_BUFFER, da_count(idxBuf)*sizeof(GLushort), idxBuf.p, GL_STREAM_DRAW);
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glDrawElements(GL_TRIANGLES, da_count(idxBuf), GL_UNSIGNED_SHORT, NULL);
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}
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#if 0 // TODO: implemenet some time..
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static void
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DrawAliasShadow(dmdl_t *paliashdr, int posenum)
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{
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unsigned short total;
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GLenum type;
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int *order;
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vec3_t point;
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@ -325,19 +323,28 @@ DrawAliasShadow(dmdl_t *paliashdr, int posenum)
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order = (int *)((byte *)paliashdr + paliashdr->ofs_glcmds);
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height = -lheight + 0.1f;
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/* stencilbuffer shadows */
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#if 0
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if (have_stencil && gl_stencilshadow->value)
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if (have_stencil)
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{
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glEnable(GL_STENCIL_TEST);
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glStencilFunc(GL_EQUAL, 1, 2);
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glStencilOp(GL_KEEP, GL_KEEP, GL_INCR);
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}
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#endif // 0
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GL3_UseProgram(gl3state.si3DaliasColor.shaderProgram);
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// GL1 uses alpha 0.5, but in GL3 0.3 looks better
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GLfloat color[4] = {0, 0, 0, 0.3};
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// draw the shadow in a single draw call, just like the model
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da_clear(vtxBuf);
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da_clear(idxBuf);
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while (1)
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{
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int i, j;
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GLushort nextVtxIdx = da_count(vtxBuf);
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/* get the vertex count and primitive type */
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count = *order++;
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@ -357,44 +364,79 @@ DrawAliasShadow(dmdl_t *paliashdr, int posenum)
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type = GL_TRIANGLE_STRIP;
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}
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total = count;
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GLfloat vtx[3*total];
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unsigned int index_vtx = 0;
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gl3_alias_vtx_t* buf = da_addn_uninit(vtxBuf, count);
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do
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for(i=0; i<count; ++i)
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{
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/* normals and vertexes come from the frame list */
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memcpy(point, s_lerped[order[2]], sizeof(point));
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VectorCopy(s_lerped[order[2]], point);
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point[0] -= shadevector[0] * (point[2] + lheight);
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point[1] -= shadevector[1] * (point[2] + lheight);
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point[2] = height;
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vtx[index_vtx++] = point [ 0 ];
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vtx[index_vtx++] = point [ 1 ];
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vtx[index_vtx++] = point [ 2 ];
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VectorCopy(point, buf[i].pos);
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for(j=0; j<4; ++j) buf[i].color[j] = color[j];
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order += 3;
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}
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while (--count);
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#if 0
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glEnableClientState( GL_VERTEX_ARRAY );
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// translate triangle fan/strip to just triangle indices
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if(type == GL_TRIANGLE_FAN)
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{
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GLushort i;
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for(i=1; i < count-1; ++i)
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{
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GLushort* add = da_addn_uninit(idxBuf, 3);
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glVertexPointer( 3, GL_FLOAT, 0, vtx );
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glDrawArrays( type, 0, total );
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add[0] = nextVtxIdx;
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add[1] = nextVtxIdx+i;
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add[2] = nextVtxIdx+i+1;
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}
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}
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else // triangle strip
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{
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GLushort i;
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for(i=1; i < count-2; i+=2)
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{
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// add two triangles at once, because the vertex order is different
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// for odd vs even triangles
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GLushort* add = da_addn_uninit(idxBuf, 6);
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glDisableClientState( GL_VERTEX_ARRAY );
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#endif // 0
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add[0] = nextVtxIdx + i-1;
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add[1] = nextVtxIdx + i;
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add[2] = nextVtxIdx + i+1;
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add[3] = nextVtxIdx + i;
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add[4] = nextVtxIdx + i+2;
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add[5] = nextVtxIdx + i+1;
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}
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// add remaining triangle, if any
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if(i < count-1)
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{
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GLushort* add = da_addn_uninit(idxBuf, 3);
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add[0] = nextVtxIdx + i-1;
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add[1] = nextVtxIdx + i;
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add[2] = nextVtxIdx + i+1;
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}
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}
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}
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/* stencilbuffer shadows */
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if (have_stencil && gl_stencilshadow->value)
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GL3_BindVAO(gl3state.vaoAlias);
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GL3_BindVBO(gl3state.vboAlias);
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glBufferData(GL_ARRAY_BUFFER, da_count(vtxBuf)*sizeof(gl3_alias_vtx_t), vtxBuf.p, GL_STREAM_DRAW);
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GL3_BindEBO(gl3state.eboAlias);
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glBufferData(GL_ELEMENT_ARRAY_BUFFER, da_count(idxBuf)*sizeof(GLushort), idxBuf.p, GL_STREAM_DRAW);
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glDrawElements(GL_TRIANGLES, da_count(idxBuf), GL_UNSIGNED_SHORT, NULL);
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if (have_stencil)
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{
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//glDisable(GL_STENCIL_TEST);
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glDisable(GL_STENCIL_TEST);
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}
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}
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#endif // 0
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static qboolean
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CullAliasModel(vec3_t bbox[8], entity_t *e)
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@ -821,27 +863,26 @@ GL3_DrawAliasModel(entity_t *e)
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glDepthRange(gl3depthmin, gl3depthmax);
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}
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STUB_ONCE("TODO: *proper* stencil shadows!")
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#if 0
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if (gl_shadows->value &&
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!(currententity->flags & (RF_TRANSLUCENT | RF_WEAPONMODEL | RF_NOSHADOW)))
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{
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glPushMatrix();
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//glPushMatrix();
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hmm_mat4 oldMat = gl3state.uni3DData.transModelMat4;
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/* don't rotate shadows on ungodly axes */
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glTranslatef(e->origin[0], e->origin[1], e->origin[2]);
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glRotatef(e->angles[1], 0, 0, 1);
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//glTranslatef(e->origin[0], e->origin[1], e->origin[2]);
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//glRotatef(e->angles[1], 0, 0, 1);
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hmm_mat4 rotTransMat = HMM_Rotate(e->angles[1], HMM_Vec3(0, 0, 1));
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VectorCopy(e->origin, rotTransMat.Elements[3]);
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gl3state.uni3DData.transModelMat4 = HMM_MultiplyMat4(oldMat, rotTransMat);
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GL3_UpdateUBO3D();
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glDisable(GL_TEXTURE_2D);
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glEnable(GL_BLEND);
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glColor4f(0, 0, 0, 0.5f);
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DrawAliasShadow(paliashdr, currententity->frame);
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glEnable(GL_TEXTURE_2D);
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glDisable(GL_BLEND);
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glPopMatrix();
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//glPopMatrix();
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gl3state.uni3DData.transModelMat4 = oldMat;
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GL3_UpdateUBO3D();
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}
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glColor4f(1, 1, 1, 1);
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#endif // 0
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}
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@ -508,7 +508,7 @@ extern cvar_t *gl3_particle_fade_factor;
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extern cvar_t *gl_modulate;
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extern cvar_t *gl_lightmap;
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extern cvar_t *gl_stencilshadow;
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extern cvar_t *gl_shadows;
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extern cvar_t *gl_dynamic;
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