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deferred fog, fix of first frame on double buffered option

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This commit is contained in:
veclavtalica 2024-10-22 09:47:47 +03:00
parent 48f63fc9df
commit 1296d41ad7
1 changed files with 49 additions and 1 deletions
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50
src/rendering/twn_gl_15_rendering.c
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@ -147,6 +147,12 @@ typedef struct {
} DeferredCommandDepthRange;
typedef struct {
float start, end, density;
Color color;
} DeferredCommandApplyFog;
typedef struct {
enum DeferredCommandType {
DEFERRED_COMMAND_TYPE_DRAW,
@ -155,6 +161,8 @@ typedef struct {
DEFERRED_COMMAND_TYPE_USE_PIPIELINE,
DEFERRED_COMMAND_TYPE_USE_TEXTURE_MODE,
DEFERRED_COMMAND_TYPE_DEPTH_RANGE,
DEFERRED_COMMAND_TYPE_APPLY_FOG,
DEFERRED_COMMAND_TYPE_POP_FOG,
} type;
union {
@ -164,6 +172,7 @@ typedef struct {
DeferredCommandUsePipeline use_pipeline;
DeferredCommandUseTextureMode use_texture_mode;
DeferredCommandDepthRange depth_range;
DeferredCommandApplyFog apply_fog;
};
} DeferredCommand;
@ -208,6 +217,8 @@ static void finally_use_2d_pipeline(void);
static void finally_use_space_pipeline(void);
static void finally_use_texture_mode(TextureMode mode);
static void deferred_render_skybox(char *paths);
static void deferred_apply_fog(float start, float end, float density, Color color);
static void deferred_pop_fog(void);
static DeferredCommand *deferred_commands;
@ -346,6 +357,19 @@ static void issue_deferred_draw_commands(void) {
break;
}
case DEFERRED_COMMAND_TYPE_APPLY_FOG: {
deferred_apply_fog(deferred_commands[i].apply_fog.start,
deferred_commands[i].apply_fog.end,
deferred_commands[i].apply_fog.density,
deferred_commands[i].apply_fog.color);
break;
}
case DEFERRED_COMMAND_TYPE_POP_FOG: {
deferred_pop_fog();
break;
}
default:
SDL_assert(false);
}
@ -376,7 +400,7 @@ void start_render_frame(void) {
void end_render_frame(void) {
if (!ctx.render_double_buffered || ctx.game.frame_number == 0) {
if (!ctx.render_double_buffered || ctx.game.frame_number == 1) {
issue_deferred_draw_commands();
SDL_GL_SwapWindow(ctx.window);
arrsetlen(deferred_commands, 0);
@ -1086,6 +1110,21 @@ static void deferred_render_skybox(char *paths) {
void finally_apply_fog(float start, float end, float density, Color color) {
DeferredCommand command = {
.type = DEFERRED_COMMAND_TYPE_APPLY_FOG,
.apply_fog = (DeferredCommandApplyFog){
.start = start,
.end = end,
.density = density,
.color = color
}
};
arrpush(deferred_commands, command);
}
static void deferred_apply_fog(float start, float end, float density, Color color) {
if (density < 0.0f || density > 1.0f)
log_warn("Invalid fog density given, should be in range [0..1]");
@ -1108,6 +1147,15 @@ void finally_apply_fog(float start, float end, float density, Color color) {
void finally_pop_fog(void) {
DeferredCommand command = {
.type = DEFERRED_COMMAND_TYPE_POP_FOG,
};
arrpush(deferred_commands, command);
}
static void deferred_pop_fog(void) {
glDisable(GL_FOG);
}