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[client] egl: cache renderer GL state
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Browse Source 
Track context-local GL bindings to avoid redundant program, framebuffer,
buffer, texture, sampler, viewport, blend, and scissor state changes.

Invalidate the cache across context switches, ImGui rendering, and
shared object changes. Preserve CPU-backed texture upload correctness by
explicitly clearing pixel unpack buffer bindings where required.

This reduces hot-path driver overhead without adding waits or GPU
synchronization.
This commit is contained in:
Geoffrey McRae
2026-07-17 22:38:46 +10:00
parent b2c40a80af
commit e5c4fe68dc
17 changed files with 439 additions and 68 deletions
Download Patch File Download Diff File Expand all files Collapse all files

15
client/renderers/EGL/cursor.c
View File

@@ -25,6 +25,7 @@
#include "texture.h"
#include "shader.h"
#include "state.h"
#include "model.h"
#include "util.h"
@@ -386,7 +387,7 @@ struct CursorState egl_cursorRender(EGL_Cursor * cursor,
state.rect.x = max(0, state.rect.x - 1);
state.rect.y = max(0, state.rect.y - 1);
glEnable(GL_BLEND);
egl_stateBlend(true);
switch(cursor->type)
{
case LG_CURSOR_MONOCHROME:
@@ -394,14 +395,14 @@ struct CursorState egl_cursorRender(EGL_Cursor * cursor,
setCursorTexUniforms(cursor, &cursor->norm, true, pos.x, pos.y,
size.w, size.h, scale);
egl_shaderUse(cursor->norm.shader);
glBlendFunc(GL_ZERO, GL_SRC_COLOR);
egl_stateBlendFunc(GL_ZERO, GL_SRC_COLOR);
egl_modelSetTexture(cursor->model, cursor->norm.texture);
egl_modelRender(cursor->model);
setCursorTexUniforms(cursor, &cursor->mono, true, pos.x, pos.y,
size.w, size.h, scale);
egl_shaderUse(cursor->mono.shader);
glBlendFunc(GL_ONE_MINUS_DST_COLOR, GL_ZERO);
egl_stateBlendFunc(GL_ONE_MINUS_DST_COLOR, GL_ZERO);
egl_modelSetTexture(cursor->model, cursor->mono.texture);
egl_modelRender(cursor->model);
break;
@@ -412,14 +413,14 @@ struct CursorState egl_cursorRender(EGL_Cursor * cursor,
setCursorTexUniforms(cursor, &cursor->norm, false, pos.x, pos.y,
size.w, size.h, scale);
egl_shaderUse(cursor->norm.shader);
glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
egl_stateBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
egl_modelSetTexture(cursor->model, cursor->norm.texture);
egl_modelRender(cursor->model);
setCursorTexUniforms(cursor, &cursor->mono, false, pos.x, pos.y,
size.w, size.h, scale);
egl_shaderUse(cursor->mono.shader);
glBlendFunc(GL_ONE_MINUS_DST_COLOR, GL_ZERO);
egl_stateBlendFunc(GL_ONE_MINUS_DST_COLOR, GL_ZERO);
egl_modelSetTexture(cursor->model, cursor->mono.texture);
egl_modelRender(cursor->model);
break;
@@ -430,13 +431,13 @@ struct CursorState egl_cursorRender(EGL_Cursor * cursor,
setCursorTexUniforms(cursor, &cursor->norm, false, pos.x, pos.y,
size.w, size.h, scale);
egl_shaderUse(cursor->norm.shader);
glBlendFunc(GL_ONE, GL_ONE_MINUS_SRC_ALPHA);
egl_stateBlendFunc(GL_ONE, GL_ONE_MINUS_SRC_ALPHA);
egl_modelSetTexture(cursor->model, cursor->norm.texture);
egl_modelRender(cursor->model);
break;
}
}
glDisable(GL_BLEND);
egl_stateBlend(false);
return state;
}