Invoke yagl_gles2_context_prepare_framebuffer in glClear for GLESv2/GLESv3submit/tizen/20211224.014123accepted/tizen/unified/20211227.122832

- glClear can be used to clear entire framebuffer. Therefore invoke
  yagl_gles2_context_prepare_framebuffer in glClear for GLESv2/GLESv3
  to write back clear result if the fb is binded with texture that
  targets from an eglimage.

Change-Id: I591bdb1a6ebfd36afc948a070dd25089fed5be60

7 files changed, 44 insertions, 4 deletions

diff --git a/GLES_common/yagl_gles_calls.c b/GLES_common/yagl_gles_calls.c
index 7e5d763..6a60449 100644
--- a/GLES_common/yagl_gles_calls.c
+++ b/GLES_common/yagl_gles_calls.c
@@ -760,9 +760,7 @@ YAGL_API void glClear(GLbitfield mask)
 
     YAGL_GET_CTX();
 
-    yagl_render_invalidate((mask & GL_COLOR_BUFFER_BIT));
-
-    yagl_host_glClear(mask);
+    yagl_gles_context_clear(ctx, mask);
 
     YAGL_LOG_FUNC_EXIT(NULL);
 }
diff --git a/GLES_common/yagl_gles_context.c b/GLES_common/yagl_gles_context.c
index b57d949..00c21ad 100644
--- a/GLES_common/yagl_gles_context.c
+++ b/GLES_common/yagl_gles_context.c
@@ -2539,3 +2539,19 @@ void yagl_gles_context_hint(struct yagl_gles_context *ctx,
 
     yagl_host_glHint(target, mode);
 }
+
+void yagl_gles_context_clear(struct yagl_gles_context *ctx, GLbitfield mask)
+{
+    YAGL_LOG_FUNC_SET(yagl_gles_context_clear);
+
+    if (mask & ~(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT | GL_STENCIL_BUFFER_BIT)) {
+        YAGL_SET_ERR(GL_INVALID_VALUE);
+        return;
+    }
+
+    yagl_render_invalidate((mask & GL_COLOR_BUFFER_BIT));
+
+    ctx->clear(ctx);
+
+    yagl_host_glClear(mask);
+}
diff --git a/GLES_common/yagl_gles_context.h b/GLES_common/yagl_gles_context.h
index ca3f43f..2962cb0 100644
--- a/GLES_common/yagl_gles_context.h
+++ b/GLES_common/yagl_gles_context.h
@@ -164,6 +164,8 @@ struct yagl_gles_context
                  GLenum /*target*/,
                  GLenum /*mode*/);
 
+    void (*clear)(struct yagl_gles_context */*ctx*/);
+
     struct yagl_namespace framebuffers;
 
     struct yagl_namespace vertex_arrays;
@@ -515,4 +517,7 @@ void yagl_gles_context_hint(struct yagl_gles_context *ctx,
                             GLenum target,
                             GLenum mode);
 
+void yagl_gles_context_clear(struct yagl_gles_context *ctx,
+                             GLbitfield mask);
+
 #endif
diff --git a/GLESv1_CM/yagl_gles1_context.c b/GLESv1_CM/yagl_gles1_context.c
index f51200a..7f899cf 100644
--- a/GLESv1_CM/yagl_gles1_context.c
+++ b/GLESv1_CM/yagl_gles1_context.c
@@ -1556,6 +1556,10 @@ static void yagl_gles1_context_hint(struct yagl_gles_context *ctx,
 {
 }
 
+static void yagl_gles1_context_clear(struct yagl_gles_context *ctx)
+{
+}
+
 struct yagl_client_context *yagl_gles1_context_create(struct yagl_sharegroup *sg)
 {
     struct yagl_gles1_context *gles1_ctx;
@@ -1591,6 +1595,7 @@ struct yagl_client_context *yagl_gles1_context_create(struct yagl_sharegroup *sg
     gles1_ctx->base.validate_renderbuffer_format = &yagl_gles1_context_validate_renderbuffer_format;
     gles1_ctx->base.validate_framebuffer_blit = &yagl_gles1_context_validate_framebuffer_blit;
     gles1_ctx->base.hint = &yagl_gles1_context_hint;
+    gles1_ctx->base.clear = &yagl_gles1_context_clear;
 
     YAGL_LOG_FUNC_EXIT("%p", gles1_ctx);
 
diff --git a/GLESv2/yagl_gles2_context.c b/GLESv2/yagl_gles2_context.c
index fa67c75..c373e53 100644
--- a/GLESv2/yagl_gles2_context.c
+++ b/GLESv2/yagl_gles2_context.c
@@ -270,7 +270,7 @@ static void yagl_gles2_context_prepare_framebuffer(struct yagl_gles2_context *ct
                 yagl_gles_framebuffer_texture2d(fb,
                     fb->target,
                     GL_COLOR_ATTACHMENT0 + i,
-                    yagl_gles_framebuffer_attachment_color0,
+                    yagl_gles_framebuffer_attachment_color0 + i,
                     state.textarget,
                     0,
                     state.texture);
@@ -1548,6 +1548,13 @@ void yagl_gles2_context_hint(struct yagl_gles_context *ctx,
 {
 }
 
+void yagl_gles2_context_clear(struct yagl_gles_context *gles_ctx)
+{
+    struct yagl_gles2_context *ctx = (struct yagl_gles2_context *)gles_ctx;
+
+    yagl_gles2_context_prepare_framebuffer(ctx, ctx->base.fbo_draw);
+}
+
 int yagl_gles2_context_get_programiv(struct yagl_gles2_context *ctx,
                                      struct yagl_gles2_program *program,
                                      GLenum pname,
@@ -1619,6 +1626,7 @@ struct yagl_client_context *yagl_gles2_context_create(struct yagl_sharegroup *sg
     gles2_ctx->base.validate_renderbuffer_format = &yagl_gles2_context_validate_renderbuffer_format;
     gles2_ctx->base.validate_framebuffer_blit = &yagl_gles2_context_validate_framebuffer_blit;
     gles2_ctx->base.hint = &yagl_gles2_context_hint;
+    gles2_ctx->base.clear = &yagl_gles2_context_clear;
     gles2_ctx->get_programiv = &yagl_gles2_context_get_programiv;
     gles2_ctx->pre_use_program = &yagl_gles2_context_pre_use_program;
     gles2_ctx->pre_link_program = &yagl_gles2_context_pre_link_program;
diff --git a/GLESv2/yagl_gles2_context.h b/GLESv2/yagl_gles2_context.h
index d306223..a2ae3e4 100644
--- a/GLESv2/yagl_gles2_context.h
+++ b/GLESv2/yagl_gles2_context.h
@@ -282,6 +282,8 @@ void yagl_gles2_context_hint(struct yagl_gles_context *ctx,
                              GLenum target,
                              GLenum mode);
 
+void yagl_gles2_context_clear(struct yagl_gles_context *ctx);
+
 int yagl_gles2_context_get_programiv(struct yagl_gles2_context *ctx,
                                      struct yagl_gles2_program *program,
                                      GLenum pname,
diff --git a/GLESv2/yagl_gles3_context.c b/GLESv2/yagl_gles3_context.c
index 846ac7f..7ac5e4f 100644
--- a/GLESv2/yagl_gles3_context.c
+++ b/GLESv2/yagl_gles3_context.c
@@ -1583,6 +1583,11 @@ static void yagl_gles3_context_hint(struct yagl_gles_context *gles_ctx,
     }
 }
 
+static void yagl_gles3_context_clear(struct yagl_gles_context *gles_ctx)
+{
+    yagl_gles2_context_clear(gles_ctx);
+}
+
 static int yagl_gles3_context_get_programiv(struct yagl_gles2_context *ctx,
                                             struct yagl_gles2_program *program,
                                             GLenum pname,
@@ -1688,6 +1693,7 @@ struct yagl_client_context *yagl_gles3_context_create(struct yagl_sharegroup *sg
     gles3_ctx->base.base.validate_renderbuffer_format = &yagl_gles3_context_validate_renderbuffer_format;
     gles3_ctx->base.base.validate_framebuffer_blit = &yagl_gles3_context_validate_framebuffer_blit;
     gles3_ctx->base.base.hint = &yagl_gles3_context_hint;
+    gles3_ctx->base.base.clear = &yagl_gles3_context_clear;
     gles3_ctx->base.get_programiv = &yagl_gles3_context_get_programiv;
     gles3_ctx->base.pre_use_program = &yagl_gles3_context_pre_use_program;
     gles3_ctx->base.pre_link_program = &yagl_gles3_context_pre_link_program;