X-Git-Url: http://nitlanguage.org

diff --git a/lib/glesv2/glesv2.nit b/lib/glesv2/glesv2.nit
index 3e6ad1b..06803ae 100644
--- a/lib/glesv2/glesv2.nit
+++ b/lib/glesv2/glesv2.nit
@@ -146,15 +146,21 @@ extern class GLProgram `{GLuint`}
 		return active_attrib_name_native(index, max_size).to_s
 	end
 	private fun active_attrib_name_native(index, max_size: Int): NativeString `{
+		// We get more values than we need, for compatibility. At least the
+		// NVidia driver tries to fill them even if NULL.
+
 		char *name = malloc(max_size);
-		glGetActiveAttrib(recv, index, max_size, NULL, NULL, NULL, name);
+		int size;
+		GLenum type;
+		glGetActiveAttrib(recv, index, max_size, NULL, &size, &type, name);
 		return name;
 	`}
 
 	# Size of the active attribute at `index`
 	fun active_attrib_size(index: Int): Int `{
 		int size;
-		glGetActiveAttrib(recv, index, 0, NULL, NULL, &size, NULL);
+		GLenum type;
+		glGetActiveAttrib(recv, index, 0, NULL, &size, &type, NULL);
 		return size;
 	`}
 
@@ -162,8 +168,9 @@ extern class GLProgram `{GLuint`}
 	#
 	# May only be float related data types (single float, vectors and matrix).
 	fun active_attrib_type(index: Int): GLFloatDataType `{
+		int size;
 		GLenum type;
-		glGetActiveAttrib(recv, index, 0, NULL, &type, NULL, NULL);
+		glGetActiveAttrib(recv, index, 0, NULL, &size, &type, NULL);
 		return type;
 	`}
 
@@ -175,14 +182,17 @@ extern class GLProgram `{GLuint`}
 	end
 	private fun active_uniform_name_native(index, max_size: Int): NativeString `{
 		char *name = malloc(max_size);
-		glGetActiveUniform(recv, index, max_size, NULL, NULL, NULL, name);
+		int size;
+		GLenum type;
+		glGetActiveUniform(recv, index, max_size, NULL, &size, &type, name);
 		return name;
 	`}
 
 	# Size of the active uniform at `index`
 	fun active_uniform_size(index: Int): Int `{
 		int size;
-		glGetActiveUniform(recv, index, 0, NULL, NULL, &size, NULL);
+		GLenum type;
+		glGetActiveUniform(recv, index, 0, NULL, &size, &type, NULL);
 		return size;
 	`}
 
@@ -190,8 +200,9 @@ extern class GLProgram `{GLuint`}
 	#
 	# May be any data type supported by OpenGL ES 2.0 shaders.
 	fun active_uniform_type(index: Int): GLDataType `{
-		GLenum type;
-		glGetActiveUniform(recv, index, 0, NULL, &type, NULL, NULL);
+		int size;
+		GLenum type = 0;
+		glGetActiveUniform(recv, index, 0, NULL, &size, &type, NULL);
 		return type;
 	`}
 end
@@ -407,6 +418,25 @@ extern class GLTextureTarget
 	new cube_map `{ return GL_TEXTURE_CUBE_MAP; `}
 end
 
+# A server-side capability
+class GLCap
+
+	# TODO private init
+
+	# Internal OpenGL integer for this capability
+	private var val: Int
+
+	# Enable this server-side capability
+	fun enable do enable_native(val)
+	private fun enable_native(cap: Int) `{ glEnable(cap); `}
+
+	# Disable this server-side capability
+	fun disable do disable_native(val)
+	private fun disable_native(cap: Int) `{ glDisable(cap); `}
+
+	redef fun hash do return val
+	redef fun ==(o) do return o != null and is_same_type(o) and o.hash == self.hash
+end
 redef class Sys
 	private var gles = new GLES is lazy
 end
@@ -492,6 +522,29 @@ class GLES
 	# Specify the width of rasterized lines
 	fun line_width(width: Float) `{ glLineWidth(width); `}
 
+	# Set the pixel arithmetic for the blending operations
+	#
+	# Defaultvalues before assignation:
+	# * `src_factor`: `GLBlendFactor::one`
+	# * `dst_factor`: `GLBlendFactor::zero`
+	fun blend_func(src_factor, dst_factor: GLBlendFactor) `{
+		glBlendFunc(src_factor, dst_factor);
+	`}
+
+	# Specify the value used for depth buffer comparisons
+	#
+	# Default value is `GLDepthFunc::less`
+	#
+	# Foreign: glDepthFunc
+	fun depth_func(func: GLDepthFunc) `{ glDepthFunc(func); `}
+
+	# Copy a block of pixels from the framebuffer of `fomat` and `typ` at `data`
+	#
+	# Foreign: glReadPixel
+	fun read_pixels(x, y, width, height: Int, format: GLPixelFormat, typ: GLPixelType, data: Pointer) `{
+		glReadPixels(x, y, width, height, GL_RGBA, GL_UNSIGNED_BYTE, data);
+	`}
+
 	# Set the texture minifying function
 	#
 	# Foreign: glTexParameter with GL_TEXTURE_MIN_FILTER
@@ -519,6 +572,63 @@ class GLES
 	fun tex_parameter_wrap_t(target: GLTextureTarget, value: GLTextureWrap) `{
 		glTexParameteri(target, GL_TEXTURE_WRAP_T, value);
 	`}
+
+	# Render primitives from array data
+	#
+	# Foreign: glDrawArrays
+	fun draw_arrays(mode: GLDrawMode, from, count: Int) `{ glDrawArrays(mode, from, count); `}
+
+	# OpenGL server-side capabilities
+	var capabilities = new GLCapabilities is lazy
+end
+
+# Entry point to OpenGL server-side capabilities
+class GLCapabilities
+
+	# GL capability: blend the computed fragment color values
+	#
+	# Foreign: GL_BLEND
+	fun blend: GLCap is lazy do return new GLCap(0x0BE2)
+
+	# GL capability: cull polygons based of their winding in window coordinates
+	#
+	# Foreign: GL_CULL_FACE
+	fun cull_face: GLCap is lazy do return new GLCap(0x0B44)
+
+	# GL capability: do depth comparisons and update the depth buffer
+	#
+	# Foreign: GL_DEPTH_TEST
+	fun depth_test: GLCap is lazy do return new GLCap(0x0B71)
+
+	# GL capability: dither color components or indices before they are written to the color buffer
+	#
+	# Foreign: GL_DITHER
+	fun dither: GLCap is lazy do return new GLCap(0x0BE2)
+
+	# GL capability: add an offset to depth values of a polygon fragment before depth test
+	#
+	# Foreign: GL_POLYGON_OFFSET_FILL
+	fun polygon_offset_fill: GLCap is lazy do return new GLCap(0x8037)
+
+	# GL capability: compute a temporary coverage value where each bit is determined by the alpha value at the corresponding location
+	#
+	# Foreign: GL_SAMPLE_ALPHA_TO_COVERAGE
+	fun sample_alpha_to_coverage: GLCap is lazy do return new GLCap(0x809E)
+
+	# GL capability: AND the fragment coverage with the temporary coverage value
+	#
+	# Foreign: GL_SAMPLE_COVERAGE
+	fun sample_coverage: GLCap is lazy do return new GLCap(0x80A0)
+
+	# GL capability: discard fragments that are outside the scissor rectangle
+	#
+	# Foreign: GL_SCISSOR_TEST
+	fun scissor_test: GLCap is lazy do return new GLCap(0x0C11)
+
+	# GL capability: do stencil testing and update the stencil buffer
+	#
+	# Foreign: GL_STENCIL_TEST
+	fun stencil_test: GLCap is lazy do return new GLCap(0x0B90)
 end
 
 # Float related data types of OpenGL ES 2.0 shaders
@@ -562,6 +672,83 @@ extern class GLDataType
 	fun is_sampler_cube: Bool `{ return recv == GL_SAMPLER_CUBE; `}
 end
 
+# Kind of primitives to render with `GLES::draw_arrays`
+extern class GLDrawMode
+	super GLEnum
+
+	new points `{ return GL_POINTS; `}
+	new line_strip `{ return GL_LINE_STRIP; `}
+	new line_loop `{ return GL_LINE_LOOP; `}
+	new lines `{ return GL_LINES; `}
+	new triangle_strip `{ return GL_TRIANGLE_STRIP; `}
+	new triangle_fan `{ return GL_TRIANGLE_FAN; `}
+	new triangles `{ return GL_TRIANGLES; `}
+end
+
+# Pixel arithmetic for blending operations
+#
+# Used by `GLES::blend_func`
+extern class GLBlendFactor
+	super GLEnum
+
+	new zero `{ return GL_ZERO; `}
+	new one `{ return GL_ONE; `}
+	new src_color `{ return GL_SRC_COLOR; `}
+	new one_minus_src_color `{ return GL_ONE_MINUS_SRC_COLOR; `}
+	new dst_color `{ return GL_DST_COLOR; `}
+	new one_minus_dst_color `{ return GL_ONE_MINUS_DST_COLOR; `}
+	new src_alpha `{ return GL_SRC_ALPHA; `}
+	new one_minus_src_alpha `{ return GL_ONE_MINUS_SRC_ALPHA; `}
+	new dst_alpha `{ return GL_DST_ALPHA; `}
+	new one_minus_dst_alpha `{ return GL_ONE_MINUS_DST_ALPHA; `}
+	new constant_color `{ return GL_CONSTANT_COLOR; `}
+	new one_minus_constant_color `{ return GL_ONE_MINUS_CONSTANT_COLOR; `}
+	new constant_alpha `{ return GL_CONSTANT_ALPHA; `}
+	new one_minus_constant_alpha `{ return GL_ONE_MINUS_CONSTANT_ALPHA; `}
+
+	# Used for destination only
+	new src_alpha_saturate `{ return GL_SRC_ALPHA_SATURATE; `}
+end
+
+# Condition under which a pixel will be drawn
+#
+# Used by `GLES::depth_func`
+extern class GLDepthFunc
+	super GLEnum
+
+	 new never `{ return GL_NEVER; `}
+	 new less `{ return GL_LESS; `}
+	 new equal `{ return GL_EQUAL; `}
+	 new lequal `{ return GL_LEQUAL; `}
+	 new greater `{ return GL_GREATER; `}
+	 new not_equal `{ return GL_NOTEQUAL; `}
+	 new gequal `{ return GL_GEQUAL; `}
+	 new always `{ return GL_ALWAYS; `}
+end
+
+# Format of pixel data
+#
+# Used by `GLES::read_pixels`
+extern class GLPixelFormat
+	super GLEnum
+
+	new alpha `{ return GL_ALPHA; `}
+	new rgb `{ return GL_RGB; `}
+	new rgba `{ return GL_RGBA; `}
+end
+
+# Data type of pixel data
+#
+# Used by `GLES::read_pixels`
+extern class GLPixelType
+	super GLEnum
+
+	new unsigned_byte `{ return GL_UNSIGNED_BYTE; `}
+	new unsigned_short_5_6_5 `{ return GL_UNSIGNED_SHORT_5_6_5; `}
+	new unsigned_short_4_4_4_4 `{ return GL_UNSIGNED_SHORT_4_4_4_4; `}
+	new unsigned_short_5_5_5_1 `{ return GL_UNSIGNED_SHORT_5_5_5_1; `}
+end
+
 # Set of buffers as a bitwise OR mask, used by `GLES::clear`
 #
 # ~~~