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GLES2: prevent batching if blend mode changes (see bug #4964)

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Sylvain 2021-11-15 09:43:44 +01:00
parent 92f2fdfc84
commit d4df5d33c5
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1 changed files with 3 additions and 0 deletions
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src/render/opengles2/SDL_render_gles2.c
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@ -1144,6 +1144,7 @@ GLES2_RunCommandQueue(SDL_Renderer * renderer, SDL_RenderCommand *cmd, void *ver
/* let's group non joined lines */
SDL_RenderCommand *finalcmd = cmd;
SDL_RenderCommand *nextcmd = cmd->next;
SDL_BlendMode thisblend = cmd->data.draw.blend;
while (nextcmd != NULL) {
const SDL_RenderCommandType nextcmdtype = nextcmd->command;
@ -1151,6 +1152,8 @@ GLES2_RunCommandQueue(SDL_Renderer * renderer, SDL_RenderCommand *cmd, void *ver
break; /* can't go any further on this draw call, different render command up next. */
} else if (nextcmd->data.draw.count != 2) {
break; /* can't go any further on this draw call, those are joined lines */
} else if (nextcmd->data.draw.blend != thisblend) {
break; /* can't go any further on this draw call, different blendmode copy up next. */
} else {
finalcmd = nextcmd; /* we can combine copy operations here. Mark this one as the furthest okay command. */
count += cmd->data.draw.count;