ogl_beamforming

Commit: 85e0891e6f8b1c6c65aad9409267a58f38b55bae
Parent: b70e37172cb82062608901eeb4693efe14cd889c
Author: Randy Palamar
Date:   Tue, 25 Jun 2024 13:17:40 -0600

draw output image to a RenderTexture

Diffstat:
M
beamformer.c
 | 
27
++++++++++++++++-----------
M
main.c
 | 
8
+-------
M
util.h
 | 
6
+++---

3 files changed, 20 insertions(+), 21 deletions(-)
diff --git a/beamformer.c b/beamformer.c
@@ -102,20 +102,25 @@ do_beamformer(BeamformerCtx *ctx, Arena arena, s8 rf_data)
 		do_compute_shader(ctx, rf_ssbo_idx, CS_UFORCES);
 	}
 
-	BeginDrawing();
-
-	ClearBackground(ctx->bg);
+	BeginTextureMode(ctx->fsctx.output);
+		ClearBackground(ctx->bg);
+		BeginShaderMode(ctx->fsctx.shader);
+			glUseProgram(ctx->fsctx.shader.id);
+			glBindBufferBase(GL_SHADER_STORAGE_BUFFER, 1, ctx->out_data_ssbo);
+			glUniform3uiv(ctx->fsctx.out_data_dim_id, 1, ctx->out_data_dim.E);
+			DrawTexture(ctx->fsctx.output.texture, 0, 0, WHITE);
+		EndShaderMode();
+	EndTextureMode();
 
-	BeginShaderMode(ctx->fsctx.shader);
-		glUseProgram(ctx->fsctx.shader.id);
-		glBindBufferBase(GL_SHADER_STORAGE_BUFFER, 1, ctx->out_data_ssbo);
-		glUniform3uiv(ctx->fsctx.out_data_dim_id, 1, ctx->out_data_dim.E);
-		DrawTexture(ctx->fsctx.output, 0, 0, WHITE);
-	EndShaderMode();
+	BeginDrawing();
+		ClearBackground(ctx->bg);
 
-	DrawTextEx(ctx->font, txt[txt_idx], pos.rl, fontsize, fontspace, BLACK);
-	draw_debug_overlay(ctx, arena);
+		Texture *rtext = &ctx->fsctx.output.texture;
+		Rectangle rect = { 0.0f, 0.0f, (f32)rtext->width, -(f32)rtext->height };
+		DrawTextureRec(*rtext, rect, (Vector2){0}, WHITE);
 
+		DrawTextEx(ctx->font, txt[txt_idx], pos.rl, fontsize, fontspace, BLACK);
+		draw_debug_overlay(ctx, arena);
 	EndDrawing();
 
 	if (IsKeyPressed(KEY_R))
diff --git a/main.c b/main.c
@@ -152,13 +152,7 @@ init_fragment_shader_ctx(FragmentShaderCtx *ctx, uv3 out_data_dim)
 	/* TODO: add min max uniform */
 
 	/* output texture for image blitting */
-	Texture2D new;
-	new.width   = out_data_dim.w;
-	new.height  = out_data_dim.h;
-	new.mipmaps = 1;
-	new.format  = RL_PIXELFORMAT_UNCOMPRESSED_R32G32B32A32;
-	new.id      = rlLoadTexture(0, new.width, new.height, new.format, new.mipmaps);
-	ctx->output = new;
+	ctx->output = LoadRenderTexture(out_data_dim.w, out_data_dim.h);
 }
 
 static u32
diff --git a/util.h b/util.h
@@ -86,9 +86,9 @@ typedef struct {
 } ComputeShaderCtx;
 
 typedef struct {
-	Shader    shader;
-	Texture2D output;
-	i32       out_data_dim_id;
+	Shader          shader;
+	RenderTexture2D output;
+	i32             out_data_dim_id;
 } FragmentShaderCtx;
 
 typedef struct {